以下是小编帮大家整理的初中英语知识点讲解，本文共3篇，欢迎大家分享。
篇1：初中英语知识点讲解
一、关系代词引导的定语从句
1、由who, whom, that，Whose引导的从句
这些词代替的先行词是人的名词或代词，who作主语指人，whom作宾语指人，that既可作主语又可作宾语(作宾语可以省略)，可以指人也可以指物。Whose 用来指人或物，只用作定语。
(1) Is he the man who/that wants to see you? 他是那个想见你的男人吗?(who/that在从句中作主语)
(2) He is the man whom/ that I saw yesterday. 他就是我昨天见的那个人。(whom/that在从句中作宾语)
(3) The man whom you spoke to just now is our English teacher 你刚刚说话的那个男人是我们的英语老师
(4) he man whose son is a doctor is our professor. 那个儿子是医生的男人是我们的教授。
2、由which, that引导的从句
它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，作宾语时可以省略，例如：
(1) Prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。(which / that在从句中作主语)
(2) The package (which / that) you are carrying is about to come unwrapped. 你拿那个包裹快要散开了。(which / that在从句中作宾语)
注意： 代表物时多用which，但在下列情况中用that而不用which：
a)先行词是anything, everything, nothing , none等不定代词时;
b)先行词由every, any, all, some, no, little, few, much等修饰时，这时的that常被省略;
c)先行词前有序数词或被形容词最高级修饰时;
d)先行词中既有人又有物时;
e)整个句中前面已有which，who,that时;
f)当先行词为物并作表语时;
g)先行词为one时;
h)先行词同时又被the only,the very,the same修饰时;
二、关系副词引导的定语从句
1、when指时间在定语从句中做时间状语也可做连接词用 I still remember the day when I first came to the school.
2、where指地点在定语从句中做地点状语 Shanghai is the city where I was born.
3、why指原因在定语从句中做原因状语 ，用在reason 后面。 Please tell me the reason why you missed the plane.
篇2：初中英语知识点讲解
一、条件状语从句
1、与现在事实相反
若与现在事实相反，虚拟语气的条件从句的谓语用过去式(be通常用were)，主句谓语用“should (would, could, might)+动词原形”。如：
If I were you, I would take an umbrella. 如果我是你，我会带把伞。(事实上我不可能是你)
If I knew her number I could ring her up. 要是我知道她的电话号码，我就可以给她打电话了。(事实上我不知道)
2、与过去事实相反
若与过去事实相反，从句：主语+had done ， 主句：主语+should/would/could/might+have done ，例如：
If I'd left sooner，I'd have been on time. 要是我早点动身，我就准时到了。(但我动身太迟了)
If I had got there earlier, I should/could have met her. 如果我早到那儿，我就会见到她。 (事实：去晚了)
3、与将来事实相反
从句：①if+主语+were to do 主句：①主语+should/would/could/might+do
②if+主语+did/were ②主语+should/would/could/might+do
③if+主语+should+do ③主语+should/would/could/might+do
例如：If he went，would you go too? 如果他去，你也去吗?(大概他不会去)
If he should come here tomorrow, I would talk to him. 如果他明天来这儿的话，我就跟他谈谈。 (事实：来的可能性很小)
注意与说明：对于与将来事实相反的情形，请注意以下几点：
一是这里说的与将来事实相反，实为对将来情况的推测;
二是此用法中的条件从句谓语除用过去式外，有时也用“should+动词原形”(表示可能性极小，常译为“万一”)或“were to+动词原形”(表示与将来事实相反的假设);
三是当条件从句使用“should+动词原形”这样的谓语时，主句谓语除可用“should (would, could, might)+动词原形”这样的虚拟语气外，也可用陈述语气或祈使语气。如：
I should see him, I'll tell him. 万一我见到他，我就告诉他。
If it should rain tomorrow, don’t expect me. 万一明天下雨，就别等我了。
二、wish 后宾语从句
1、表示与现在事实相反的愿望，谓语动词用过去式 。例如：
I wish I had your brains. 我希望我有你那样的头脑。(事实：我根本比不上你)
2、表示与过去事实相反的愿望，谓语动词：had+done 例如：
I wish I had knownthe truth of the matter. 我希望我那时就知道这件事情的真相。(事实：那时还不知道)
3、表示将来难以实现的愿望，谓语动词：should/would(情态动词) + 动词原形
I wish I should havea chance again. 我希望我还能有一次这样的机会。(事实：很难再有这样的机会了)
篇3：初中英语从句相关知识点讲解
顾名思义，用来说明主句中谓语动词发生的目的的从句叫做目的状语从句。 表示目的状语的从句可以由 that(以便)，so that(以便)， in order that(为了;以便)，Lest(免得;唯恐)， for fear that(生怕;以免)等词引导;目的状语从句的谓语常含有may, might, can, could, should, would等情态动词。
例如：You must speak louder so that /in order that you can be heard by all.
He wrote the name down for fear that(lest) he should forget it.
Better take more clothes in case the weather is cold.
学习目的状语从句应注意以下两点：
(1)目的状语从句中常含有can,could,may,might,should等情态动词。 例如：
I got up early so that I could catch the first bus. 我起得很早，目的是为了赶上头班公共汽车。
(2)在口语中so可以引导目的状语从句。例如：
We'll sit nearer the front so we can hear better. 我们坐的靠前一点，因此，我们听得清楚一点。
1、in order that与in order to的区别：
in order that+从句 in order to+动词原形 ( in order to后面加的那个不叫目的状语从句，叫目的状语) 例如：
He got up early in order to take the first bus.
= He got up early in order that he could take the first bus.(他起床很早是为了赶上第一班 公共汽车)
目的状语从句的一个特点：由于目的都是未来的行为，所以从句中一般用表示未来可能性时态，比如上面句中的could。当然还可以用will,would,can,等 。
2、so that既可引导目的状语从句，也可以引导结果状语从句。
1)其引导结果状语从句时，so that翻译为“以至于...”，经常可以和so/such...that...转换，且从句只能放在主句之后。如：He got up late so that he was late for school. = He got up so late that he was late for school.
2)其引导目的状语从句时，从句只能放在主句之后，此时可以和in order that换用。如：He got up early so that he could take the first bus. = He got up early in order that he could take the first bus.
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