高中生要想學(xué)好英語，一定要學(xué)好英語語法，本文給大家整理了高中重要的語法知識(shí)點(diǎn)，希望對同學(xué)們有幫助。

虛擬語氣在各種從句的應(yīng)用

(1)在主語從句中用來表示驚奇、惋惜、理應(yīng)如此等，其謂語形式是"should(可省) +動(dòng)詞原形"，常用于以下三種句型中。

句型一：It is necessary (important, natural, strange, etc) that…

句型二：It is a pity (a shame, no wonder, etc) that…

句型三：It is suggested (requested, proposed, desired, etc) that…

如：It is strange that he (should) have done that.

It is a pity that he (should) be so careless.

It is requested that we (should) be so careless.

(2)在賓語從句中用于suggest, propose, move, insist, desire, demand, request, order, command等動(dòng)詞后的賓語從句中，表間接的命令和建議。其謂語形式是"(should)+動(dòng)詞原形"。如：I suggest that we (should) go swimming.

(3)在表語從句中，表示間接的命令，要求、請求、建議、決定等，主句中的主語通常是suggestion, proposal,request, orders, idea等。從句謂語形式是"(should)+動(dòng)詞原形"。如：

His suggestion is that we (should) leave at once.

(4)在同位語從句中，謂語形式是"(should)+動(dòng)詞原形"。如：We received order that the work be done at once.

(5)在It is time that…句型中，其謂語動(dòng)詞形式是"動(dòng)詞的過去式"或"should +動(dòng)詞原形",should不可省。如：It"s time that we went ( should )go to school.

1、名詞性從句

(1)主語從句

What he wants is a piece of paper.

It is believed that he can solve the problem.

注：主語從句的謂語動(dòng)詞用單數(shù)。

(2)賓語從句

I don"t know how to solve the problem.

Do you know where he lives?

(3)表語從句

The problem is who can help me.

This is why I came here.

(4)同位語從句

I have no idea where he went.

I heard the news that he would come.

同位語從句用that引導(dǎo)，常跟在fact, idea, news, promise, thought, message, hope, belief, doubt等詞后，that在從句中不作任何成分。

2、定語從句

在復(fù)合句中，修飾某一名詞或代詞，或修飾整個(gè)主句的從句叫做定語從句，引導(dǎo)定語從句的關(guān)系代詞有who, whom,whose, which, that, as,和關(guān)系副詞when, where, why。

(1)that指物時(shí)一般可與which互換，但在下列情況下，要用that而不用which。

a.先行詞有all, everything等不定代詞時(shí)，如，Everything (that) he did is wrong.

b.先行詞被all, every, no, some, any, little, much等修飾時(shí)，如，I"ll read all the books (that) you lend me.

c.先行詞被序數(shù)詞或形容詞最高級修飾時(shí)，This is the first letter (that) the boy has written.

d.先行詞被the only, the very, the same, the last修飾時(shí)，如He is the very man (that) I"m looking for.

e.只用which的情況在介詞后或在非限定性定語從句中

This is the book about which we have talked a lot.

The book, which he gave me yesterday, is very interesting.

f.where和when作關(guān)系副詞

This is the room where I worked.

This is the room which I stayed in.

I remembered the day when we lived there.

I remembered the day that I spent there.

g.as和which

as 可以放于句首，而which 不可以

As you know, he is good at English.

three of them 和three of which

I have a lot of books, three of which are in Russian.

I have a lot of books and three of them are in Russian.

3、狀語從句

在復(fù)合句中起狀語作用的從句叫做狀語從句。狀語從句可分為時(shí)間狀語、地點(diǎn)狀語、原因狀語、目的狀語、結(jié)果狀語、條件狀語、行為方式狀語、比較狀語、讓步狀語等多種。

1、英語的詞類

句子要由詞組成，英語詞類有十種：

句中成分用實(shí)詞，名、代、動(dòng)、副、數(shù)、形容;

冠、介、連詞和感嘆，虛詞附加或溝通。

詞類功能掌握了，造句之時(shí)好運(yùn)用。

2、語序歌

主、謂、賓、表同漢語，定語有同也有異。

狀語位置最特殊，不能全和漢語比。

3、肯定句變一般疑問句

have和be提句首，其它助詞比開頭。

時(shí)間、人稱由do變，動(dòng)詞只把原形留。

謂語助詞有幾個(gè)，第一助詞提句首。

4、肯定旬變否定句

否定謂語加not，放在be和have后。

其它要加助詞do，do的后邊加not，

時(shí)間、人稱由do變，

謂語若是助詞多，not緊跟第一個(gè)。

5、名詞的所有格

名詞只變數(shù)，不分主賓格。

人和動(dòng)物類，可變所有格。

撇(’)后加s，相當(dāng)漢語“的”。

時(shí)間、距離等，也變所有格。

以上，就是更三高考小編給大家?guī)淼母咧杏⒄Z語法基礎(chǔ)知識(shí)梳理總結(jié)全部內(nèi)容，希望對大家有所幫助！