中考英语丨重点短语及语法复习

重点短语及语法复习：

1.祈使句，+ and/or +陈述句祈使句，+ and +陈述句:

在这里祈使句相当于if引导的条件状语从句 (但此时去掉and)。

Give blood ( if you can )and many lives will be saved.

还可以用简短的形式表示，即省略动词。Give me one more hour, and I'll get thework finished. (祈使句)

=One more hour, and I'll get the work finished. (名词短语)

= If you give me one morehour, I'll getthe work finished. (if条 件句)

=lf l am given one more hour, I'll get the work finished.

= Given one more hour, I'll get the work finished.

More effort, and you will succeed.Another attempt, and you will get it.

One more minute, and the patient would have bled to death.

祈使句，+or+陈述句

Listen to the teacher carefully in class,or you can't catch what he is saying.

[典例分析]

The car is very old it runs very fast.

A. but B. or C. and

[答案] A(解析]

试题分析:

句意:小汽车很旧了，但是它跑得很快。

but但是; or或者，否则; and和，并且。根据句意，可知选A。考点:考查连词辨析。

2. as soon as的用法：一经..; 立即..; 一...就...

as soon as表示.....就，其中的从句通常用一般现在时表示将来时。

这个短语用的比较常用，口语和书面语都可以。 它的特点是， 在句子中的位置比较灵活， 而且可以用于各种时态。例如:

(1)指未发生的动作, 规律是:主句一般将来时，从句用一般现在时代替一般将来时。如:

l will tell him the news as soon as he comes back。

注: 有时，为了特意表达刚刚完成某事就如何如何， 需要用现在完成时。

如:l will go with you as soon as l have washed my face.

(2)指紧接着发生的两个短动作，主从句都用一般过去时。

如:He took out his English books as soon as he sat down

不过, 我也见过从句和主句都用一般现在时的情况。

如: As soon as he finishes his classwork, he runs out of the class.他一做完课堂作业，就跑出了教室。

He jumped out of bed as soon as he was called.

一听到有人叫他，他立即跳下床来。

[典例分析]

l will tell him the news ( ) he comes back.

A. as soon as

B. as long as

C. as far as

D. even if[答案] A

考点:考查连词的用法。

3.It is + adj.+ to do句型值得注意:

该句型与It's + adj.+ for sb. to do sth.句型含义大不相同，It's + ad j.+ for sb. to dosth.结构是一个陈述句,表示说话人对客观事件的决断，比较正式,希望大家学习时注意。

若形容词是描述不定式行为者的性格、品质的, 如kind， good， nice， right，wrong , clever， careless，polite ,foolish等，用of sb.。

例如:

It's very kind of you to help me.

你能帮我， 真好。

It's clever of you to work out the mathsproblem.

你真聪明，解出了这道数学题。

若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb.,这类形容词有：difficult， easy, hard, important, dangerous , (im) possible等

例如: It's very dangerous for children to cross the busy street.

对孩子们来说， 穿过繁忙的街道很危险。

It's difficult for us to finish the work.

对我们来说，完成这项工作很困难。

注意：of sb.的句型通常都可转换为不定式作状语的句子，但for sb.句型不可以。

It's very nice of you to offer me a seat.

=You are nice to offer me a seat.

十分感谢你给我让座。

It is careless of him to lose so many things. = He is careless to lose so many things.

他丢了这么多东西，真是太粗心了

[典例分析]

It's clever you to answer thequestion so quickly.

A.of

B. with

C.to

D. in

[答案] A

考点:考查介词。