以下是小编为大家准备的公共等级英语PETS 语法辅导，本文共7篇，希望对大家有帮助。
篇1：公共等级英语PETS 语法辅导
pets 语法辅导：倒装句型
一、 倒装句之全部倒装
全部倒装是只将句子中的谓语动词全部置于主语之前。此结构通常只用与一般现在时和一般过去时。常见的结构有：
1) here, there, now, then, thus等副词置于句首, 谓语动词常用be, come, go, lie, run。
there goes the bell.
then came the chairman.
here is your letter.
2) 表示运动方向的副词或地点状语置于句首，谓语表示运动的动词。
out rushed a missile from under the bomber.
ahead sat an old woman.
注意：上述全部倒装的句型结构的主语必须是名词，如果主语是人称代词则不能完全倒装。例如：here he comes. away they went.
二、倒装句之部分倒装
部分倒装是指将谓语的一部分如助动词或情态倒装至主语之前。如果句中的谓语没有助动词或情态动词，则需添加助动词do, does或did，并将其置于主语之前。
1) 句首为否定或半否定的词语，如no, not, never, seldom, little, hardly, at no time, in no way, not until… 等。
never have i seen such a performance.
nowhere will you find the answer to this question.
not until the child fell asleep did the mother leave the room.
当not until引出主从复合句，主句倒装，从句不倒装。
注意： 如否定词不在句首不倒装。
i have never seen such a performance.
the mother didn’t leave the room until the child fell asleep.
典型例题
1) why can’t i smoke here? at no time___ in the meeting-room
a. is smoking permittedb. smoking is permitted
c. smoking is it permitted d. does smoking permit
答案a. 这是一个倒装问题。当否定词语置于句首以表示强调时，其句中的主谓须用倒装结构。 这些否定词包括no, little, hardly, seldom, never, not only, not until等。本题的正常语序是 smoking is permitted in the meeting-room at no time.
2） not until the early years of the 19th century ___ what heat is.
a. man did know b. man know c. didn’t man know d. did man know
答案d. 看到not until…的句型，我们知道为一倒装句，答案在c，d 中选一个。改写为正常语序为，man did not know what heat is until the early years of the 19th. 现在将not提前，后面就不能再用否定了,否则意思就变了。
三、以否定词开头作部分倒装
如 not only…but also, hardly/scarcely…when, no sooner… than
not only did he refuse the gift, he also severely criticized the sender.
hardly had she gone out when a student came to visit her.
no sooner had she gone out than a student came to visit her.
典型例题
no sooner___ than it began to rain heavily.
a. the game began b. has the game begun
c. did the game begin d. had the game begun
答案d. 以具有否定意义的副词放在句首时，一般采用倒装句(谓语前置)。这类表示否定意义的词有never, seldom, scarcely, little, few, not, hardly, 以及not only…but (also), no sooner…than, hardly… when scarcely… when 等等。
注意：只有当not only… but also连接两个分句时，才在第一个分句用倒装结构。如果置于句首的not only… but also仅连接两个并列词语，不可用倒装结构。
not only you but also i am fond of music.
四、so, neither, nor作部分倒装
表示“也”、“也不” 的句子要部分倒装。
tom can speak french. so can jack.
if you won’t go, neither will i.
典型例题
---do you know jim quarrelled with his brother?
---i don’t know, _____.
a. nor don’t i careb. nor do i carec. i don’t care neitherd. i don’t care also
答案：b. nor为增补意思“也不关心”，因此句子应倒装。a错在用 don’t 再次否定， c neither 用法不对且缺乏连词。 d缺乏连词。
注意： 当so引出的句子用以对上文内容加以证实或肯定时，不可用倒装结构。意为“的确如此”。
tom asked me to go to play football and so i did.
---it’s raining hard. ---so it is.
五、only在句首要倒装的情况
only in this way, can you learn english well.
only after being asked three times did he come to the meeting.
如果句子为主从复合句，则主句倒装，从句不倒装
only when he is seriously ill, does he ever stay in bed.
六、as, though 引导的倒装句
as / though引导的让步从句必须将表语或状语提前 （形容词, 副词, 分词, 实义动词提前）。
注意：
1) 句首名词不能带任何冠词。
2) 句首是实义动词, 其他助动词放在主语后。如果实义动词有宾语和状语, 随实义动词一起放在主语之前。
try hard as he will, he never seems able to do the work satisfactorily.
注意:
让步状语从句中，有though，although时，后面的主句不能有but，但是 though 和yet可连用。
七、 其他部分倒装
1) so… that 句型中的so 位于句首时，需倒装。
so frightened was he that he did not dare to move an inch.
2) 在某些表示祝愿的句型中：
may you all be happy.
3) 在虚拟语气条件句中从句谓语动词有were, had, should等词，可将if 省略，把 were, had, should 移到主语之前，采取部分倒装。
were i you, i would try it again.
典型例题：
1） not until the early years of the 19th century___ what heat is
a. man did know b. man knew c. didn’t man know d. did man know
答案为d. 否定词not在句首，要求用部分倒装的句子结构。
2） not until i began to work ___ how much time i had wasted.
a. didn’t i realizeb. did i realizec. i didn’t realize d. i realize
答案为b。
3) do you know tom bought a new car?
i don’t know, ___.
a. nor don’t i care b. nor do i care
c. i don’t care neither d. i don’t care also
解析：答案为b. 句中的nor引出部分倒装结构，表示“也不”。由 so, neither, nor引导的倒装句，表示前一情况的重复出现。其中, so用于肯定句, 而 neither, nor 用在否定句中。
pets 语法辅导：主谓一致
主谓一致是指：
1） 语法形式上要一致，即单复数形式与谓语要一致。
2） 意义上要一致，即主语意义上的单复数要与谓语的单复数形式一致。
3） 就近原则，即谓语动词的单复形式取决于最靠近它的词语。
一般来说，不可数名词用动词单数，可数名词复数用动词复数。
there is much water in the thermos.
但当不可数名词前有表示数量的复数名词时，谓语动词用复数形式。
ten thousand tons of coal were produced last year.
一、 并列结构作主语时谓语用复数
reading and writing are very important. 注意： 当主语由and连结时，如果它表示一个单一的概念，即指同一人或同一物时，谓语动词用单数，and 此时连接的两个词前只有一个冠词。the iron and steel industry is very important to our life.
典型例题
the league secretary and monitor ___ asked to make a speech at the meeting.
a. isb. was c. are d. were
答案b. 注： 先从时态上考虑。这是过去发生的事情应用过去时，先排除a.，c.。本题易误选d，因为the league secretary and monitor 好象是两个人，但仔细辨别， monitor 前没有the，在英语中，当一人兼数职时只在第一个职务前加定冠词。后面的职务用and 相连。这样本题主语为一个人，所以应选b。
二、主谓一致中的靠近原则
1）当there be 句型的主语是一系列事物时，谓语应与最邻近的主语保持一致。
there is a pen, a knife and several books on the desk..
there are twenty boy-students and twenty-three girl-students in the class.
2）当either… or… 与neither… nor， 连接两个主语时，谓语动词与最邻近的主语保持一致。 如果句子是由here, there引导，而主语又不止一个时，谓语通常也和最邻近的主语一致。
either you or she is to go.
here is a pen, a few envelops and some paper for you.
三、谓语动词与前面的主语一致
当主语后面跟有with, together with, like, except, but, no less than, as well as 等词引起的短语时，谓语动词与前面的主语一致。
the teacher together with some students is visiting the factory.
he as well as i wants to go boating.
四、谓语需用单数
1） 代词each和由every, some, no, any等构成的复合代词作主语，或主语中含有each, every, 谓语需用单数。
each of us has a tape-recorder.
there is something wrong with my watch.
2） 当主语是一本书或一条格言时，谓语动词常用单数。
the arabian night is a book known to lovers of english.
<<天方夜谭>>是英语爱好者熟悉的一本好书。
3） 表示金钱，时间，价格或度量衡的复合名词作主语 时，通常把这些名词看作一个整体，谓语一般用单数。(用复数也可，意思不变。)
three weeks was allowed for making the necessary preparations.
ten yuan is enough.
五、指代意义决定谓语的单复数
1） 在代词what, which, who, none, some, any, more, most, all等词的单复数由其指代的词的单复数决定。
all is right. (一切顺利。)
all are present.(所有人都到齐了。)
2） 集体名词作主语时，谓语的数要根据主语的意思来决定。如family, audience, crew, crowd, class, company, committee等词后用复数形式时，意为这个集体中的各个成员，用单数时表示该个集体。
his family isn’t very large.他家不是一个大家庭。
his family are music lovers. 他的家人都是音乐爱好者。
但集合名词people, police, cattle, poultry等在任何情况下都用复数形式。
are there any police around?
3）有些名词，如variety, number, population, proportion, majority 等有时看作单数，有时看作复数。
a number of +名词复数+复数动词。
the number of +名词复数+单数动词。
a number of books have lent out.
the majority of the students like english.
六、与后接名词或代词保持一致
1） 用half of, part of, most of, a portion of 等词引起主语时，动词通常与of后面的名词，代词保持一致。
most of his money is spent on books.
most of the students are taking an active part in sports.
2） 在一些短语，如 many a 或 more than one 所修饰的词作主语时，谓语动词多用单数形式。但由more than… of 作主语时，动词应与其后的名词或代词保持一致。
many a person has read the novel. 许多人都读过这本书。
more than 60 percent of the students are from the city.百分之六十多的学生都来自这个城市。
pets 语法辅导：独立主格
一、独立主格介绍
（一）： 独立主格结构的构成：
名词(代词)+现在分词、过去分词；
名词(代词)+形容词；
名词(代词)+副词；
名词(代词)+不定式；
名词(代词) +介词短语构成。
（二） 独立主格结构的特点：
1）独立主格结构的逻辑主语与句子的主语不同，它独立存在。
2）名词或代词与后面的分词，形容词，副词，不定 式，介词等是主谓关系。
3）独立主格结构一般有逗号与主句分开。
举例：
the test finished, we began our holiday.
= when the test was finished, we began our holiday.
考试结束了，我们开始放假。
the president assassinated, the whole country was in deep sorrow.
= after the president was assassinated, the whole country was in deep sorrow.
总统被谋杀了，举国上下沉浸在悲哀之中。
weather permitting, we are going to visit you tomorrow.
如果天气允许，我们明天去看你。
this done, we went home.
工作完成后，我们才回家。
the meeting gone over, everyone tired to go home earlier.
会议结束后，每个人都想早点回家。
he came into the room, his ears red with cold.
他回到了房子里，耳朵冻坏了。
he came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆
二、with的复合结构作独立主格
表伴随时，既可用分词的独立结构，也可用with的复合结构。
with +名词(代词)+现在分词/过去分词/形容词/副词/不定式/介词短语
举例: he stood there, his hand raised.
= he stood there, with his hand raise.
典型例题
the murder was brought in, with his hands ___ behind his back。
a. being tied b. having tiedc. to be tiedd. tied
答案d. with +名词（代词）+分词+介词短语结构。当分词表示伴随状况时，其主语常常用with来引导。由于本句中名词“手”与分词“绑”是被动关系，因此用过去分词，选d.
三、注意事项:
1) 独立主格结构使用介词的问题：
当介词是in时，其前后的两个名词均不加任何成分（如物主代词或冠词），也不用复数。但 with 的复合结构不受此限制：
a robber burst into the room, knife in hand.
( hand前不能加his)。
2) 当表人体部位的词做逻辑主语时，及物动词用现在分 词，不及物动词用过去分词。
he lay there, his teeth set, his hand clenched, his eyes looking straight up.
典型例题：
weather___, we’ll go out for a walk.
a permitted b permitting c permits d for permitting
答案b. 本题中没有连词，它不是复合句，也不是并列句。 句中使用了逗号，且we 小写，可知其不是两个简单句。能够这样使用的只有独立主格或with的复合结构。据此判断，本句中使用的是独立结构， 其结构为：名词+分词。 由于permit在这里翻译为’天气允许’，表主动，应用现在分词，故选b。
如果不会判断独立结构作状语的形式，不妨将句子改为条件句，例如本句改为if weather permits, we’ll go out for a walk. 然后将if 去掉，再将谓语动词改为非谓语动词即可。
篇2：PETS语法辅导：连接代词
连词是一种虚词， 它不能独立担任句子成分而只起连接词与词，短语与短语以及句与句的作用。连词主要可分为两类：并列连词和从属连词。并列连词用来连接平行的词、词组和分句。如：and, but, or, nor, so, therefore, yet, however, for, hence, as well as, both…and, not only…but also, either…or, neither…nor, (and)then等等。
1、并列连词与并列结构：并列连词引导两个并列的句子。
1) and 与or
判断改错：
(错) they sat down and talk about something.
(错) they started to dance and sang.
(错) i saw two men sitting behind and whisper there.
(对) they sat down and talked about something.
(对) they started to dance and sing.
(对)i saw two men sitting behind and whispering there.
解析：
第一句： and 连接两个并列的谓语，所以 talk 应改为 talked。
第二句：and 连接两个并列的动词不定式，第二个不定式往往省略to，因此sang 应改为 sing。
第三句：and 连接感观动词saw 后面的用作的宾补的两个并列分词结构，因此whisper应改为whispering。
注意：and 还可以和祈使句或名词词组连用表示条件。（or也有此用法）
make up your mind, and you’ll get the chance.
= if you make up your mind, you’ll get the chance.
one more effort, and you’ll succeed.
= if you make one more effort, you’ll succeed.
2) both …and 两者都
she plays (both) the piano and the guitar.
3) not only…but (also), as well as不但…而且）
she plays not only the piano, but (also) the guitar.
注意： not only… but also 关联两个分句时，一个分句因有否定词not 而必须倒装。
not only does he like reading stories, but also he can even write some.
4) neithe…nor 意思为“既不……也不……”谓语动词采用就近原则，与nor后的词保持一致。
neither you nor he is to blame.
2 比较and和or
1) 并列结构中，or通常用于否定句，and用于肯定句。
2) 但有时and 也可用于否定句。请注意其不同特点：
there is no air or water in the moon.
there is no air and no water on the moon.
在否定中并列结构用or 连接，但含有两个否定词的句子实际被看作是肯定结构，因此要用and。
典型例题
---i don’t like chicken ___ fish.
---i don’t like chicken, ___ i like fish very much.
a. and； and b. and； but c. or； but d. or；and
答案c。否定句中表并列用or, but 表转折。
判断改错：
(错) we will die without air and water.
(错) we can’t live without airor water.
(对) we will die without air or water.
(对) we can’t live without air and water.
3 表示选择的并列结构
1) or 意思为“否则”。
i must work hard, or i’ll fail in the exam.
2) either…or 意思为“或者……或者……”。注意谓语动词采用就近原则。
either you or i am right.
4 表示转折或对比
1) but表示转折，while表示对比。
some people love cats, while others hate them.
典型例题
--- would you like to come to dinner tonight?
--- i’d like to, ___ i’m too busy.
a. and b. so c. as d. but
答案d。but与前面形成转折，符合语意。而表并列的and， 结果的so，原因的as都不符合句意。
2) not…but… 意思为“不是……而是……”
not 和but 后面的用词要遵循一致原则。
they were not the bones of an animal, but (the bones) of a human being.
5 表原因关系
1) for
判断改错：
(错) for he is ill, he is absent today.
(对) he is absent today, for he is ill.
for是并列连词，不能置于含两个并列分句的句子的句首，只能将其放在两个分句中间。
2) so, therefore
he hurt his leg, so he couldn’t play in the game.
注意：
a. 两个并列连词不能连用，但therefore, then, yet.可以和并列连词连用。
you can watch tv, and or you can go to bed.
he hurt his leg, and so / and therefore he couldn’t play in the game.
b. although… yet…，但although不与 but连用。
(错) although he was weak, but he tried his best to do the work..
(对) although he was weak, yet he tried his best to do the work.
6 比较so和 such
其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so是副词，只能修饰形容词或副词。so 还可与表示数量的形容词many，few，much， little连用，形成固定搭配。
so + adj. such + a(n) + n.
so + adj. + a(n) + n. such + n. (pl.)
so + adj. + n. (pl.) such +n. (pl.)
so + adj. + n. [不可数] such +n. [不可数]
so foolish such a fool
so nice a flowersuch a nice flower
so many/ few flowers such nice flowers
so much/little money. such rapid progress
so many people such a lot of people
so many 已成固定搭配，a lot of 虽相当于 many，但 a lot of 为名词性的，只能用such搭配。
so…that与such…that之间的转换既为 so与such之间的转换。
篇3：大学英语四六级考试语法辅导
语态
可以有两种被动结构的类型,例如:
He was said to be jealous of her success.
It was said that he was jealous of her success.
能同时适用于上述两个句型的主动词通常都是表示“估计”,“相信”等意义的动词,常见的有assume,believe,expect,fear,feel,know,presume,report,say,suppose,understand等.
It is supposed that the ship has been sunk.
The ship is supposed to have been sunk.
担当be supposed to 与不定式的一般形式搭配时往往表示不同的意义.例如:
Why are you driving so fast in this area? You are supposed to know the speed to know the speed limit. (你应该晓得速度限制)
双宾语及宾补结构的被动语态
双宾语结构的被动语态: 双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语.
He was asked a number of questions at the press conference.
Two days were allowed them for making the necessary preparations.
宾补结构的被动语态:
She was called Big Sister by everybody.
Then he was made a squad leader.
He was considered quite qualified for the job.
The room was always kept clean and tidy.
短语动词
Vi + adv
The plane took off two hours late.
Vi + prep
They looked round the Cathedral.
Vi + prep (有被动语态)
She’s looking after her sister’s children.
The children were always well looked after.
Vi + adv + prep
I began to look forward to their visits.
Vt + O + adv
Some women choose to stay at home and bring up their children.
The children were brought up by their mother.
They took him on.
Vt + adv + O (无被动语态)
I am trying to give up smoking.
Vt + O + prep
We talked Donald into agreement.
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