初中英语语法重难点总结

初中英語語法重難點總結

一.as … as …結構

表示像...一样，强调数量或程度。通常中间只能用形容词或副词的原级，不能用比较级或最高级。若第二个as之后使用独立的人称代词，一般用主格(较正式)或宾格(非正式)均可。具體用法如下:

1.若涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数

+as”。如：

He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。

There are not as many restaurants as there were. 现在餐馆没有过去多了。

2.“as+形容词或副词原级+as...”意为“和...一样”，表示同级的比较，第一个as为副词，第二个as为连词。

（1）as...as结构用于表示不同人或物同一性质的比较，意为...和...一样

The tree is as tall as the building.这棵树和那栋楼一样高。

（2）as...as结构用于表示同一个人或物不同性质的比较，意为既...又...

This swimming pool is as wide as it is long.

这个游泳池宽度和长度相等。

（3）as...as结构用于表示两个人或物不同性质的比较，表示程度相同或相当，意为...而...，在否定句结构是so/as...as...

He cannot run so/as fast as you.他没你跑得快。

He was as handsome as his wife was beautiful.

他长得很英俊，他的妻子也长得非常漂亮。

3.as...as的常见句型

（1）as...as possible／sb can尽可能的……

Please answer my question as soon as possible．

请尽快回答我的问题。

The detective is searching the man as carefully as he can．

那个侦探正在尽可能仔细地搜查那个男子的身体。

（2）as...as usual／before像以前一样……

She looks as pretty as before．

她看起来和以前一样漂亮

Though they failed，they still worked as hard as usual．

尽管他们失败了，但他们仍像以前一样努力工作。

（3）as long as只要，引导条件状语从句

I will stay with you as long as there is a room free．

要是你有一间空余的房子，我就住在你这里。

You may borrow this book as long as you promise to give it back 只要你答应归还，你就可以把这书借走。

二.Too … to … , so … that …和such … that …

1.too…to的语法:

too…to的句式结构形式为“too＋形容词／副词+to+动词原形”，通常翻译成“太…而不能…”。在通常情况下，too…to…结构中的不定式可根据其是否及物来确定它是否带宾语。

Eg: He is too shy to give a speech. 他太害羞，不敢做演讲。

It's too far to get there on time. 那个地方太远，不能准时到达。

不定式的逻辑主语：有时不定式前可以带有一个由介词for引出的逻辑主语。

Eg: It's too expensive for her to buy. 太贵了，她买不起。

The box is too heavy for the boy to carry. 这个箱子太重，这男孩提不起。

2) 不定式是否带宾语：在通常情况下，too…to…结构中的不定式可根据其是否及物来确定它是否带宾语。

Eg: He is too tired to go any further. 他太累了，不能再往前走了。

The room is too dirty to live in. 这房间太脏，不能住。

3) 不定式是否用被动语态

Eg: The text is too difficult to understand. 这课文太难了，理解不了。

The text is too difficult for the students to understand. 这课文太难了，学生理解不了。

2. so....that的用法：

意为“如此......以至于.....”so用来修饰形容词或副词。

eg: The bag is so heavy that I can't carry it.

（这个袋子太重了，我提不动）

so.....that可以和too.....to.....或者enough to do sth替换。

eg：The car is so expensive that I can't afford it.

=The car is too expensive for me to buy.

(这辆车太贵了，我负担不起。)

eg: He is so old that he can take care of himself.

=He is old enough to take care of himself.

(他年龄足够大了，可以照顾自己了。)

需要注意的是：that后面加句子，to 后面加动词原形。

3. such....that的用法：

such+ a/an+形容词+名词+that…

eg: This is such an interesting book that we all enjoy reading it. 这本书非常有趣，我们都喜欢看。

They are such interesting books that we all enjoy reading them. 这些书很有趣，我们都喜欢看。

He shut the window with such force that the glass broke.

他关窗子用力很大，玻璃都震破了。

so....that, such.....that，s o that的辨析