【导语】下面是小编为大家推荐的初中英语语法知识点之时态（共7篇），欢迎大家分享。
篇1：初中英语语法知识点之时态
初中英语语法知识点之时态
初中英语时态知识点：过去进行时的用法详解
(1) 表示在过去某一时间正在进行的动作，此时句中往往有表示过去的时间状语then,at that time,this time,yesterday等。
I was doing my homework when my mother came to home.
(2)叙述在过去的同一时间都在进行的几个动作，通常用While
I was studying at college while my brother was teaching at university..
(3)表示在过去某一段时间内一直持续进行的动作
They were expecting you yesterday, but you didn't turn up.
初中英语时态知识点：一般现在表过去的用法
1.用于某些动词(tell, say, hear, learn, gather等)表示不确定的过去时间：
John tells me you will leave tomorrow. 约翰告诉我你明天离开。
I hear that he got married last month. 我听说他上个月结婚了。
I hear you want a secretary. 我听说你需要一个秘书。
He says the matter is rather urgent. 他说这事相当紧急。
Mary says you told her to come over here. 玛丽说是你让她到这儿来的。
It really gets me when he says those stupid things. 他说那些傻话真让我生气。
2.当要陈述一个客观事实时，有时即使有过去时间状语也可用一般现在时：
The story is set in the summer of 1937. 故事的背景是1937年夏天。
The story begins in the year 1937. 故事开始于1937年。
初中英语时态知识点：运用现在进行时常见的几个错误
1、把动词变成现在分词形式易出错。例：
(1)误：They are swiming (swim) .
正：They are swimming (swim).
(2)误：Jenny is plaiing (play) football.
正：Jenny is playing (play) football.
解析：A、动词变现在分词可有如下口诀:一般-ing;哑e先去e;重闭单辅先双写;-ie结尾y来替。
B、动词现在分词的变化规则要与名词变复数、动词变现单三等规则区分开来。
2、谓语部分的构成不完整：丢掉be动词，或忘记把动词变成现在分词。例：
(1)误：Look! Two children flying (fly) a kite in the park.
正：Look!Two children are flying (fly) a kite in the park.
(2)误：Li Ming isn't read ( not read) a book in bed now.
正：Li Ming isn't reading ( not read) a book in bed now.
解析：现在进行时的谓语部分的构成是“be+现在分词”，二者缺一不可，这一点必须要牢记。
3、对动词或动词词组提问时，丢掉代动词doing。例：
The students are singing in the room.(对划线部分提问)
→误：What are the students in the room?
→正：What are the students doing in the room?
解析：现在进行时态中对动作提问可记住此句式“What +be +主语+doing+其它?”或简写为“What......doing......? ”句式。
4、现在进行时态的谓语部分是并列结构时，容易忽视第二个以及第二个以后的动词用现在分词形式。例：
孩子们在跑还是在跳?
误：Are the children running or jump?
正：Are the children running or jumping?
解析: or连接的是两个并列成分，动词形式须一致。
初中英语时态知识点：现在进行时的应用
(1) 表示目前正在发生或进行的动作。如：
They are planting trees on the mountain. 他们在山上植树。
Mother is preparing supper in the kitchen. 母亲在厨房做晚饭。
(2) 有些非持续性动词的进行时可以表示动作即将进行或发生，或表示动作的重复。如：
He is joining the army. 他要参军了。
They are buying the house. 他们要买那座房子。
(3) 当现在进行时中有always, forever, constantly, continually修饰时，表示说话人的赞赏或厌烦的感情。如:
Why is the baby always crying? 为什么那个老是在哭。
They are always helping us. 他们总是帮助我们。
注意：表示状态、感觉、心理活动的静态动词，一般不使用语进行时态。
初中英语时态知识点：过去完成时由过去的过去来判定
由“过去的过去”来判定。
过去完成时表示“过去的过去”，是指过去某一动作之前已经发生或完成的动作，即动作有先后关系，动作在前的`用过去完成时，在后的用一般过去时。这种用法常出现在：
( 1 )宾语从句中
当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如：
She said that she had seen the film before.
( 2 )状语从句中
在时间、条件、原因、方式等状语从句中，主、从句的动作发生有先后关系，动作在前的，要用过去完成时，动作在后的要用一般过去时。如：
When I got to the station, the train had already left.
After he had finished his homework, he went to bed.
注意： before, after 引导的时间状语从句中，由于 before 和 after 本身已表达了动作的先后关系，若主、从句表示的动作紧密相连，则主、从句都用一般过去时。如：
Where did you study before you came here?
After he closed the door, he left the classroom.
( 3 )表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示“原本…，未能…”
We had hoped that you would come, but you didn't.
初中英语时态知识点：过去完成时与一般过去时的区别
虽然这两种时态都表示过去发生的动作或存在的状态，但在使用时应注意以下几点：
1. 时间状语不同：过去完成时在时间上强调“过去的过去”;而一般过去时只强调过去某一特定的时间。试比较：
They had arrived at the station by ten yesterday.
They arrived at the station at ten yesterday.
2. 在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。如：
She was very happy. Her whole family were pleased with her, too. She had just won the first in the composition competition.
3. 当两个或两个以上接连发生的动作用 and 或 but 连接时，按时间顺序，只需用一般过去时来代替过去完成时;另外，在 before ， after ， as soon as 引导的从句中，由于这些连词本身已经表示出时间的先后，因此也可以用过去时来代替过去完成时。如：
He entered the room, turned on the light and read an evening paper.
I (had) called her before I left the office.
篇2：英语语法时态知识点
英语语法时态复习知识点
1. 一般现在时
①表示客观事实或普通真理(不受时态限制)
The geography teacher told us the earth moves around the sun.
Water boils at 100°C.
②表示现状、性质、状态时多用系动词或状态动词;表示经常或习惯性的动作，多用动作动词，且常与表频率的时间状语连用。
Ice feels cold.
We always care for each other and help each other.
③表示知觉、态度、感情、某种抽象的关系或概念的词常用一般现在时：see、hear、smell、taste、feel、notice、agree、believe、like、hate、want、think、belong seem等。如：
I know what you mean.
Smith owns a car and a house.
All the students here belong to No.1 Middle School.
④在时间、条件状语从句中常用一般现在时代替将来时。但要注意由if 引导的条件状语从句中可以用shall或will表“意愿”，但不表示时态。
If you will accept my invitation and come to our party, my family will be pleased.如果你愿意接受并参加我们的舞会，我的家人会非常高兴。
⑤少数用于表示起止的动词如come、go、leave、arrive、fly、return、start、begin、pen、close、end、stop等常用一般现在时代替将来时，表示一个按规定、计划或安排要发生的动作。当be表示根据时间或事先安排，肯定会出现的状态，只用一般现在时。
The shop closes at 11:00 p.m. every day.
Tomorrow is Wednesday.
2. 一般过去时
①一般过去时的基本用法：表示过去的事情、动作或状态常与表示过去具体的时间状语连用(或有上下文语境暗示);用于表达过去的习惯;表示说话人原来没有料到、想到或希望的事通常用过去式。如：
I met her in the street yesterday.
I once saw the famous star here.
They never drank wine.
I thought the film would be interesting,but it isn’t.
②如果从句中有一个过去的时间状语，尽管从句中的动作先于主句发生，但从句中的谓语动词连用过去式。如：
He told me he read an interesting novel last night.
③表示两个紧接着发生的动作，常由以下词语连接，用一般过去时。如：but, and, when, as soon as, immediately, the moment, the minute。
The moment she came in, she told me what had happened to her.
He bought a watch but lost it.
④常用一般过去时的句型：
Why didn’t you / I think of that?
I didn’t notice it.
I forgot to tell you I had been there with my brother before.
I didn’t recognize him.
英语完形填空复习试题
It was a freezing day, when I picked up a wallet in the street. There was nothing 1 but a letter that was 2 Hellen. On the torn 3 I found the return address, so I called information. The operator asked me to 4 on, and she came back on the 5 soon, she told me that Hellenes family had 6 their house years ago. Hellen had to 7 her mother in a nursing home.
I called and found out that Hellenes mother had 8 , The woman who answered 9 that Hellen herself was 10 living here.
The director waited for me at the 11 of the nursing home. I went up to the third floor. Hellen was an old woman with a warm smile and 12 eyes. I told her about finding the wallet and showed her the letter. She took a deep 13 “Young man,” she said, “this was the 14 letter I had written to Mike 60 years ago. I loved him very much. I guess no one ever 15 up to him. I still think of him…”
I thanked Hellen and came back to the director. His secretary looked at the wallet 16 and said, “Hey, that’s Mr. Goldstein’s. He’s always losing it. He’s 17 here on the 8th floor. That’s his wallet, for 18 .”
We hurried to him and asked 19 he had lost his wallet. Mike felt his back pocket and then said. “Goodness, it’s missing.”
When I returned him the wallet and told him where Hellen was, he grew 20 . “When the letter came,” He said, “my life ended. I never married.”
We took him to Helen’s room. They stood, looked at each other for a minute and embraced (拥抱).
1. A. on B. here C. inside D. outside
2. A. sent for B. written to C. given D. signed
3. A. letter B. envelope C. wallet D. back
4. A. hold B. keep C. put D. go
5. A. way B. floor C. line D. car
6. A. bought B. sold C. moved D. built
7. A. carry B. place C. drive D. bury
8. A. left B. returned C. stayed D. died
9. A. explained B. thought C. discovered D. considered
10. A. again B. still C. now D. then
11. A. door B. house C. office D. wall
12. A. bursting B. freezing C. friendly D. lively
13. A. dive B. sight C. how D. breath
14. A. important B. oldest C. first D. last
15. A. went B. matched C. caught D. measured
16. A. immediately B. clearly C. closely D. exactly
17. A. also B. over C. right D. still
18. A. sure B. pleasure C. help D. interest
19. A. that B. if C. where D. when
20. A. nervous B. silent C. pale D. anxious
参考答案：1~5 CDBAC 6~10 BBDAB 11~15 ACDDB 16~20 C高考英语语法时态复习知识点BC
英语常见单词
stamp邮票
envelope信封
package / parcel 包裹
overweight 超重
extra postage 额外邮资
send / post / deliver a letter / mail 寄 /发信
express mail 快件
airmail 航空信件
surface mail 陆地邮寄
open an account 开一个帐户
篇3：初中英语语法时态总结
初中英语语法时态总结
初中英语语法共有16种时态，那么同学们是否学习了呢？
一、一般时态
1、一般现在时
(1)一般现在时表示没有时限的持久存在的动作或状态或现阶段反复发生的动作或状态，常和副词usually，often，always sometimes， regularly，near，occasionally，every year, every week等连用。例如：
1)The moon moves round the earth..
2)Mr. Smith travels to work by bus every day.
(2)在由after，until，before，once，when，even if，in case，as long as，as soon as，the moment以及if，unless等引导的时间状语从句或条件状语从句中，通常用一般现在时代替将来时。例如：
1)I will tell him the news as soon as I see him.
2)I will not go to countryside if it rains tomorrow.
(3)某些表示起始的动词，可用一般现在时表示按规定、计划或安排要发生的动作，这类动词有：be，go，come，start，depart，arrive，begin，leave等。例如：
1)The plane leaves at three sharp.
2)The new teachers arrive tomorrow.
(4)在由why，what，where，whoever，who，that，as等引导的从句中，也常用一般现在时代替将来时。例如：
1)Free tickets will be given to whoever comes first.
2)You’ll probably be in the same train as I am tomorrow.
2.一般过去时
(1)表示过去某一特定时间所发生的、可完成的动作或状态，常与表示确切过去时间的词、短语或从句连用。例如：
We went to the pictures last night and saw a very interesting film.
(2)表示过去习惯性动作。例如：
1)He always went to class last.
2)I used to do my homework in the library.
(注意与be used to doing短语的区别)
3.一般将来时
1)表示将来打算进行或期待发生的动作或状态。例如：
I shall graduate next year.
2)几种替代形式：
1)be going to +v在口语中广泛使用，表示准备做或将发生的事情。例如：
I’m going to buy a house when we’ve saved enough money.
2)be to +v表示计划安排要做的事，具有“必要”的强制性意义。例如：
I am to play tennis this afternoon.
3)be about to +v表示即将发生的事情。例如：
He was about to start.
4)be due to +v表示预先确定了的事，必定发生的事。例如：
The train is due to depart in ten minutes.
5)be on the point/verge of +v – ing强调即将发生的某种事态。例如：
The baby was on the point of crying when her mother finally came home
二、进行时态
1.现在进行时
(1)表示现在正在进行的动作，常与now，right now，at the mother，for the time being，for the present等连用。例如：
Don’t disturb her. She is reading a newspaper now.
(2)表示现阶段经常发生的动作，常与always，continually，forever，constantly等连用。例如：
My father is forever criticizing me.
(3)表示根据计划或安排在最近要进行的事情。具有这种语法功能的动词仅限于过渡性动词。即表示从一个状态或位置转移到另一个状态或位置上去的动词。常用的有：go，come，leave，start，arrive，return等。例如：
They are leaving for Hong Kong next month.
(4)有些动词不能用进行时，这是一类表示“感觉，感情，存在，从属”等的动词。如：see，hear，smell，taste，feel，notice，look，appear，(表示感觉的词);hate，love，fear，like，want，wish，prefer，refuse，forgive(表示感情的动词);be，exist，remain，stay，obtain(表示存在状态的动词);have，possess，own，contain，belong，consist of，form(表示占有与从属的动词);understand，know，believe，think，doubt，forget，remember(表示思考理解的动词)。但是如果它们词义改变，便也可用进行时态。例如：
1)Tom looks pale. What’s wrong with him?
(look在此为联系动词，意为“显得，看上去”)
2)Tom is looking for his books.
(look在此为实义动词，意为“寻找”)
2.过去进行时
过去进行时表示一个过去的动作发生时或发生后，另一个过去的动作正在进行，或表示过去反复的习惯，常与always，continually，constantly等动词连用。例如：
1)We were discussing the matter when the headmaster entered.
2)Whenever I visited him, he was always writing at the desk.
3.将来进行时
将来进行时主要表示将来某一时刻正在进行的动作，或表示要在将来某一时刻开始，并继续下去的动作。常用来表示礼貌的询问、请求等。例如：
1)This time next day they will be sitting in the cinema.
2)What will you be doing at six tomorrow evening?
4.完成进行时
(现在、过去、将来)完成进行时是(现在、过去、将来)完成时的强调形式，将放在完成时态部分讲述。
三、完成时态
完成时态通常表示已完成或从事的动作。它可分为：
1.现在完成时
(1)现在完成时用来表示对目前状况仍有影响的，刚刚完成的`动作(常与yet，already，just连用)，或者过去某一时刻发生的，持续到现在的情况(常与for，since连用)。例如：
1)I have just finished my homework.
2)Mary has been ill for three days.
(2)常与现在完成时连用的时间状语有：since, for, during, over等引导出的短语;副词already, yet, just, ever, now, before, often, lately, recently等;状语词组this week (morning, month, year), so far, up to now, many times, up to the present等。例如：
1)I haven’t been there for five years.
2)So far, she hasn’t enjoyed the summer vacation.
3)There have been a lot of changes since 1978.
(3)完成时态可用在下列结构中：
This (That, It) is (was) the first (second…) time +定语从句;This (That, It) is (was) the only (last) + n +定语从句;This (That, It) is (was) +形容词最高级+ n +定语从句。如果主句的谓语动词是一般现在时，从句的谓语动词通常用现在完成时;如果主句谓语动词是一般过去时，从句谓语动词通常用过去完成时。例如：
(1)This is one of the rarest questions that have ever been raised at such a meeting.
(2)There was a knock at the door. It was the second time someone had interrupted me that evening.
2.过去完成时
(1)表示过去某时间前已经发生的动作或情况，这个过去的时间可以用by，before等介词短语或一个时间状语从句来表示;或者表示一个动作在另一个过去动作之前已经完成。例如：
1)We had just had our breakfast when Tom came in.
2)By the end of last year they had turned out 5, 000 bicycles.
(2)动词expect, hope, mean, intend, plan, suppose, wish, want, desire等用过去完成时，表示过去的希望、预期、意图或愿望等没有实现。例如：
I had meant to take a good holiday this year, but I wasn’t able to get away.
另外两种表示“过去想做而未做的事”的表达方式是：
1)was / were + to have done sth,例如：
We were to have come yesterday, but we couldn’t.
2)intended (expected, hope, meant, planned, supposed, wished, wanted, desired) + to have done sth,例如：
I meant to have told you about it, but I forgot to do so.
(3)过去完成时常用于以下固定句型：
1)hardly, scarcely, barely + 过去完成时+ when + 过去时。例如：
Hardly had I got on the bus when it started to move.
2)no sooner +过去完成时+ than +过去时。例如：
No sooner had I gone out than he came to see me.
3)by (the end of ) +过去时间，主句中谓语动词用过去完成时。例如：
The experiment had been finished by 4 o’clock yesterday afternoon.
3.将来完成时
将来完成时表示在将来某一时刻将完成或在另一个未来的动作发生之前已经完成的动作;也可以用来表示一种猜测。常与将来完成时连用的时间状语有：by (the time / the end of ) +表示将来时间的短语和句子;before (the end of ) +表示将来时间的词语或句子;when, after等加上表示将来动作的句子等。例如：
1)By this time tomorrow you will have arrived in Shanghai.
2)I shall have finished this composition before 9 o’clock.
3)When we get on the railway station, the train will probably have left.
4.完成进行时
完成进行时是完成时的强调形式，有现在完成进行时，过去完成进行时，将来完成进行时。
(1)现在完成进行时表示过去某一时刻之前开始的动作或状态一直延续到过去某一时刻。例如：
I have been looking for my lost book for three days, but I still haven’t found it.
(2)过去完成进行时表示过去某一时刻之前开始的动作或状态一直延续到过去某一时刻。例如：
It had been raining cats and dogs for over a week and the downpour had caused landslides in many places.
(3)将来完成进行时表示在将来某一时刻之前开始的一个动作或状态一直延续到将来某一时刻。例如：
By the time you arrive tonight, she will have been typing for hours.
四：时态一致
时态一致是英语四、六级考试的一个重要内容。通常应由主句谓语的时态决定从句的谓语时态。一般原则是：
1、当主句谓语使用现在时或将来时，从句的谓语根据具体情况使用任何时态
He says that he lives in Wuhan.
We hope that there will be many people at your party today.
“Did you hear that Bill finally sold the house?” “Yes, but I don’t know who bought it.”
“There’s a lot of excitement on the street.”
“There certainly is. Do you suppose the astronauts have returned?”
2、当主句谓语使用过去时的时候，从句的谓语必须使用过去范围的时态
He said he was writing a novel.
The teacher wanted to know when we would finish the experiment.
He said his father had been an engineer.
3、当从句是表示没有时间概念的真理时，从句的谓语应使用一般现在时。例如：
The teacher told them since light travels faster than sound, lightning appears to go before thunder.
注：在此种情况下，即使主句谓语用了过去式的各种时态，从句谓语也应用一般现在时。
4、从句谓语只能用虚拟语气的情况
利用时态一致原则确定从句动词时态时，还应注意，若主语动词是表示命令、请求、要求、建议、劝告等的动词，从句谓语只能用虚拟语气，不能遵循时态一致原则。例如：
We insisted that we do it ourselves.
动词的语态
语态也是动词的一种形式，英语有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态表示主语是动作的承受者。
1)We use electricity to run machines. (主动语态)
2)Electricity is used to run machines. (被动语态)
1.不能用于被动语态的动词和短语
(1)在英语中，不及物动词不能用于被动语态，但有些不及物动词(包括短语)容易引起误用。如：appear, belong, belong, die, escape, fall, happen, last, remain, succeed, occur, come true, take place, consist of。
(2)某些表示状态或特征的及物动词，如：become, contain, cost, fit, have, resemble, suit也没有被动语态。
2.被动语态的时态形式
常用的被动语态有表1所列的几种时态形式。
SPAN> 一般时 进行时 完成时
现在 am asked am being asked
is asked is being asked
are asked are being asked
过去
was be asked was being asked
were be asked were being asked
将来 shall be asked shall have been asked
will be asked will have been asked
过去 should be asked should have been asked
将来 would be asked would have been asked
3.短语动词的被动语态
短语动词转换为被动语态时，通常被看作是一个动词，后面的介词或副词不能拆开或省略。例如：
1)So far no correct conclusion has arrived at.
2)All the rubbish should be got rid of.
4.“get + -ed分词”的被动语态
“get + -ed分词”结构强调动作的结果，而非动作本身，常用来表示突发性的，出乎意料的偶然事件。例如：
The boy got hurt on his way home from work.
另外，“get + -ed分词”还可用于谈论为自己做的事，是主动的行为而不是被动的行为。例如：
get dressed(穿衣服) get divorced(离婚)
get engaged(订婚) get confused(迷惑不解)
get lost(迷路) get washed(洗脸)
get married(结婚)
5.能带两个宾语和复合宾语的动词改为被动语态
(1)能带两个宾语的动词改为被动语态时，一次只能由一个宾语作主语，另一个宾语被保留下来。例如：
1)We showed the visitors our new products.(主动语态)
2)The visitors were shown our new products.(被动语态)
3)Our new products were shown to the visitors.(被动语态)
(2)能带复合宾语的动词改为被动语态时，原来的宾语补足语变为主语补足语。例如：
1)The teacher appointed him League secretary.(主动语态)
2)He was appointed League secretary.(被动语态)
6.被动语态与系表结构的区别
(1)The novel was well written.(系表结构)
(2)The novel was written by Diskens.(被动语态)
7.少数动词的主动语态有时有被动的意思
例1：The book is selling remarkably well.
例2：The song sounds very beautiful.
能这样用的动词还有read(读起来)，clean(擦起来)，wash(洗起来)，write(写起来)。
例3：My watch needs cleaning. (= My watch needs to be cleaned).
能像need这样用的动词还有：want, require, deserve, do, owe, bind等。
例4：The meat is cooking.
例5：The book written by the professor is printing.
篇4：初中英语语法知识点
英语语法是英语知识中十分重要的环节，不过毕竟英语不是我们的母语，所以想要运用得得心应手的话，还是需要多多学习的。今天我们就一起来了解一下有关英语知识中的语法知识点，希望能够对您有所帮助!
英语语法一
1. 使用比较等级的基本原则：不作比较用原级，两者比较用比较级，多者比较用最高级。如：
He is very tall. 他很高。(尽管“很高”，但没有比较，故用原级)
He is very short, but taller than me. 他很矮，但比我高。
Among the three short girls, Mary is the tallest. 在这三个矮姑娘中，玛丽是最高的。
2. 不能使用双重比较等级：即构成比较级时不能既在词尾加 -er，又在其前加 more;构成最高级时不能既在词尾加-est，又在其前加 most。如：
误：His English is more better than mine.
正：His English is much better than mine. 他的英语比我的英语好多了。
虽不能说more better, most earliest 之类的，但可用“比较级+and+比较级”这样的形式：
It’s getting warmer and warmer. 天气越来越暖和了。
The city is becoming more and more beautiful.这个城市变得越来越美丽了。
3. 使用比较等级要合乎逻辑。请看下面两道题：
(1) Her music is more beautiful than ______.
A. me
B. you
C. us
D. his
此题应选 D，其中的his=his music。因为从逻辑上说，应该是her music与his music作比较，而不是her music与me, you, us比较。
(2) China is larger than ______ country in Asia.
A. any
B. other
C. any other
D. any others
此题应选C，因为China也在Asia范围内，所以应在any后加上other，以排除自己比自己大的不合理逻辑。
英语语法二
When she saw it, she turned red. 她看到它时脸红了。(时间状语从句)
He was angry because I was late. 他很生气因为我迟到了。 (原因状语从句)
If you come, he抣l be pleased. 如果你来，他会高兴的。(条件状语从句)
He was so angry that he couldn’t speak. 他气得话都说不出来。(结果状语从句)
Although he is poor, he’s happy. 虽然穷，但他仍很快乐。(让步状语从句)
You must do as I tell you. 你必须按我告诉你的去做。(方式状语从句)
Put it where you can reach it. 把它放在你可以拿到的地方。(地点状语从句)
Speak clearly so that they may understand you. 讲清楚些，以便他们能理解你。(目的状语从句)
Tell him as soon as he arrives. 他一来就告诉他。(不能用will arrive)
在时间和条件状语从句中，通常要用一般现在时表示将来意义，而不能直接使用将来时态：
I won’t go if it rains tomorrow. 要是明天下雨，我就不去。(不能用will rain)
有时也可见到 if you will 这样的说法，但那不是将来时态，而是表示意愿或委婉的请求(此时的 will是情态动词)：
If you will wait a moment, I’ll fetch the money. 请等一下，我就去拿钱。
英语语法三
一、后接in doing sth
difficulty后接in doing sth时，意思是“做某事有困难”，其中的介词in含有while的意思，表示“当……的时候”“在……的过程中”，整个结构的意思是“当做某事的时候有困难”“在做某事的过程中有困难”。如：
We had difficulty in finding a parking place. 我们费了很大劲才找到一个停车位。
They shouldn’t have any difficulty in finding the house. 他们找这房子时大概不会有困难。
If you should have any difficulty in getting spare parts ring this number. 万一你买备件时遇到什么困难，请打这个电话号码。
One way of deciding what to do when you have difficulty in choosing the best course of action is to toss a coin. 当人们遇到困难不知选什么行动方案最好的时候，一个办法就是扔硬币来决定干什么好。
注：该结构中的介词in有时可以省略。如：
I had difficulty carrying out the plan. 我执行这项计划有困难。
She was having great difficulty getting her car out, and so I had to move my car to let her out. 当时她正无法把车子开出来，所以我就移开了我的车子让她开出来。
另外，若difficulty后没有出现动名词，而是接名词，则要用with sth。如：
Some people had difficulty with the lecture, but most understood. 有些人听讲有困难，但大部分人听懂了。
If you have the least difficulty with the arrangements for the conference, phone me at once. 如果你安排会议有什么困难，马上给我打电话。
二、后接about doing sth
difficulty后接 about doing sth时，表示关于做某事的困难，其中的介词about意为“关于”。如：
There shouldn’t be any difficulty about getting you a visa. 给你弄个签证不会有什么困难吧。
注：about后也可直接跟名词作宾语，此时的about仍表示“关于”的意思。如：
There oughtn’t to have been any difficulty about it 此事本不应有什么困难。
此时还可用介词over表示类似意思。如：
There doesn’t seem to have been any difficulty over the money question. 在钱的问题上似乎没发生什么困难。
三、后接of doing sth
difficulty后接of doing sth时，表示做某事的困难，其中介词of表示所属关系，相当汉语的“的”字。如：
He tried to explain to me the difficulty of learning to cook from books. 他向我解释照着书本学习烹饪的困难。
One of the annoyances of working here is the difficulty of parking near the office. 在这里工作有一件伤脑筋的事，就是在办公处附近很难停车。
Both “feat” and “achievement” emphasize the difficulty of accomplishing something mental or physical. feat和achievement均着重指在脑力或体力方面完成某事物的艰巨性。
注：of后也可直接跟名词作宾语，此时的介词of仍表示所属关系，意为“……的困难”。如：
She has no notion of the difficulty of this problem. 她不了解这个问题的难处。
Do you understand the difficulty of my position? 你了解我处境的困难吗?
篇5：初中英语语法知识点
宾语从句
1. 宾语从句的含义
充当主句宾语的从句叫做宾语从句。
如：She knew that the teacher had seen the film.
她知道这位老师看过这部电影。
“that the teacher had seen the film”做 knew 的宾语，同时又是由连接词 that 引导的从句，所以它叫做宾语从句。
2. 宾语从句的分类
(1)动词宾语从句：顾名思义，它是位于动词后面的宾语从句。
如：He asked whose handwriting was the best in our class.他问我们班上谁的书法最好。
(2)介词宾语从句：顾名思义，它是位于介词后面的宾语从句。
如：I agree with what you said just now.我同意你刚才说的话。
(3)形容词宾语从句：顾名思义，它是位于形容词后面的宾语从句。
如：I am afraid that I will be late. 恐怕我要迟到了。
3. 引导宾语从句的连接词
(1)that：没有含义，在宾语从句中不做成分
(2)whether/if：表示是否，在宾语从句中不做成分。
I don't know if /whether he still lives here after so many years. 我不知道这么多年后，他是否还住在这里。
(3)连接代词：what， which， who， whom， whose(在宾语从句中做主、宾、表和定语)
连接副词：where， when， how， why(在宾语从句中做状语)
The small children don't know what is in their stockings.(what 在宾语从句中做主语)
这些小孩子不知道什么在他们的长筒袜里。
Could you tell me why you were late for the meeting this morning?(why 在宾语从句中做原因状语)
你能告诉我为什么你今天早上开会迟到吗?
4. 在做宾语从句的题目时应注意两点
(1)时态：
①当主句是现在时态时，宾语从句可以根据需要使用任何时态。
I don't know when he will come back.我不知道他将何时回来。
He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。
②当主句是过去时态时，宾语从句必须是一种过去的时态。
She asked me if I knew whose pen it was.她问我是否知道这是谁的钢笔。
He said that he could finish his work before supper.他说他会在晚饭前完成工作。
③当表示客观事实或普遍真理的句子做宾语从句时，任何时候都用一般现在时。
The teacher said that the earth goes round the sun.老师说过地球绕着太阳转。
(2)语序：
任何从句都使用陈述句语序，宾语从句当然也不例外。
同学们只要掌握了以上内容，应对宾语从句的题目就不成问题了。
篇6：初中英语语法知识点
介词by的用法
1. 意为“在……旁”，“靠近”。
Some are singing and dancing under a big tree. Some are drawing by the lake.
有的在大树下唱歌跳舞。有的在湖边画画儿。
2. 意为“不迟于”，“到……时为止”。
Your son will be all right by supper time.
你的儿子在晚饭前会好的。
How many English songs had you learned by the end of last term?
到上个学期末你们已经学了多少首英语歌曲?
3. 表示方法、手段，可译作“靠”、“用”、“凭借”、“通过”、“乘坐”等。
The monkey was hanging from the tree by his tail and laughing.
猴子用尾巴吊在树上哈哈大笑。
The boy’s father was so thankful that he taught Edison how to send messages by railway telegraph.
孩子的父亲是那么的感激，于是他教爱迪生怎样通过铁路电报来传达信息。
4. 表示“逐个”，“逐批”的意思。
One by one they went past the table in the dark.
他们一个一个得在黑暗中经过这张桌子。
5. 表示“根据”，“按照”的意思。
What time is it by your watch?
你的表几点了?
6. 和take ， hold等动词连用，说明接触身体的某一部分。
I took him by the hand.
我拉住了他的手。
7. 用于被动句中，表示行为主体，常译作“被”、“由”等。
English is spoken by many people.
英语被许多人说。(即“许多人讲英语。”)
篇7：初中英语语法知识点
一、名词(n.) 表示人、事物或抽象概念的名称的词
(一)名词的分类
名词分为普通名词和专有名词,其中普通名词包括可数名词和不可数名词，可数名词可用作单数，也可用作复数。
可数名词包括个体名词(表示一类人或物的个体。如：boy,desk,cat,window)和集体名词(由若干个体组成的集合体。如：family,class,police)。
不可数名词包括物质名词(表示无法分为个体的实物。如：water,paper,silk,money)和抽象名词(表示性质、行为、状态、感情或其它抽象概念。如：work,happiness,music,difficulty,housework)
专有名词表示个人、地方、机构、组织等。如：Tom,the Great Wall,the Spring Festival,France,the United States)
(二)名词的数
1.可数名词有单数和复数两种形式，其复数形式的构成主要有以下几种：
(1)一般情况下,在词尾加s.
eg.book——books,dog——dogs,pen——pens,boy——boys
以轻辅音结尾的名词后的s的读音为[s]，以浊辅音和元音结尾名词后的s读音为〔z〕。
(2)以s,x,ch,sh结尾的词名词变复数时,要在词尾加es.
eg.beach——beaches,brush——brushes,bus——buses,box—boxes(es读音为〔iz〕
(3)以“辅音字母+y”结尾的名词,先变y为i,再加es.
eg.city——cities,family——families,documentary——documentaries,country——countries,
strawberry——strawberries(ies读音为[iz])
(注：以“元音字母+y”结尾的词，直接在词尾加-s.eg.boys,holidays,days)
(4)以o结尾的名词，变复数时情况如下：
①,.tomato—tomatoes,potato—potatoes, hero—heroes negro ——negroes mongo——mongoesp
②结尾是两个元音字母的加s,eg.zoo—zoos,radio——radios
③某些外来词变复数时词尾加s,eg. piano—pianos
④一些名词的缩写形式变复数时，词尾加s,
eg.photo(photograph)——photos,kilo(kilogram)kilos
⑤zero变复数时，既可加s,也可加 eg.zeros/zeroes
(5)以f或fe结尾的名词变复数时,先把f或fe变为v,再加es.
eg.wife——wives,leaf leaves,half——halves,knife—knives,thief——thieves(res读音为[vz]
(注意：roof的复数为roofs; scarf的复数为scarfs/scarves)
(6)有些名词由单数变复数时，不是在词尾加s或es,而是变换其中的字
eg.man——men,woman——women,policeman——policemen,Englishman——Englishmen,Frenchman——Frenchmen, foot——feet, tooth——teeth, child——children,mouse—mice,Ox—Oxen(公牛)
(7)还有一些名词的单数和复数形式相同。
eg.Chinese,Japanese,sheep,deer,fish
(8)另一些名词本身即是复数形式，不可用作单数。
eg,people,police,trousers,pants,clothes,scissors
另外,①当一个名词作定语说明另一个名词时，这个名词一般用单数。
eg.an apple tree,five apple trees,a girl friend,two girl friends,a twin sister
但是，当man和woman作定语修饰复数名词时，就要用其复数形式。
eg.two men teachers,three women doctors
②可用“量词+of+名词复数”这一结构表示可数名词的数量。
eg.a room Of students,two boxes Of pencils
2.不可数名词一般没有复数形式，它的“量”的表示方式如下。
(1)表不定数量时,一般用much,(a)little,a lot of/lots of,some,any等词修饰。
eg,much money,a little bread
(2)表确定数量时,一般用“数词+量词+of+不可数名词。如：two/three/…+量词复数十of+不可数名词。
eg.a bag Of rice,two glasses Of milk,four bottles Of water
3.有些名词既可作可数名词也可作不可数名词，但词义有所不同。
eg： fruit水果——fruits表示不同种类的水果;food食物——foods各种食品;fish鱼——fishes鱼的种类;drink饮料、酒——a drink一杯/一份饮料、一杯酒; cloth布——,a cloth桌布、抹布; sand沙——sands沙滩; tea茶——a tea一杯茶;chicken鸡肉——a chicken小鸡;orange橘汁——an orange橘子; glass玻璃——a glass玻璃杯,glasses眼镜; paper纸——a paper试卷、论文;wood木头——a wood小森林;room空间、余地——a room房间
(三)名词的所有格(表示人或物的所属关系)
(1)有生命的名词所有格以及表示时间、距离、城镇、国家等的名词所有格。
①不是以s结尾的名词变成所有格时，在词尾加’s.
eg.Mike’s watch;Women’s Day
②以s结尾的名词变成所有格时,只加’。
eg.teachers’office,students’rooms
③两个或两个以上名词并列,表示共同所有，只需在最后一个名词后加’s.
eg.Tom and Mike’s room汤姆和迈克的房间(表示汤姆和迈克共有一间房)
④两个或两个以上名词并列，表示分别所有，需在几个名词后都加’s.
eg.Mary’s and Jenny’s bikes玛丽和詹妮的自行车(表示玛丽和詹妮各自的自行车)
(2)无生命的事物的名词所有格常用of结构
eg.a map Of China,the beginning Of this game,the door Of the room
(3)特殊形式
①可用’s和of短语表示的名词所有格
eg.the boy’s name=the name Of the boy(男孩的名字)
the dog’s legs=the legs of the dog(狗的腿)
China’s population=the population Of China(中国的人口)
China’s capital=the capital of China(中国的首都)
②双重所有格
eg.a fiend of my mother’s我妈妈的一个朋友
a picture of Tom’s汤姆的一张图片
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