剑桥KET语法:if 引导的真实条件状语从句

2024-05-22 11:04:48来源:网络

  真实条件状语从句表示将来有可能发生的动作或存在的状态。

  1、if 条件状语从句的时态


主句

从句

例句

主将从现

一般将来时

一般现在时

I'll start the project if you all agree 如果你们都同意,我会启动这个项目。

主情从现

含有情态动词

一般现在时

If it snows,we can ski.

如果下雪,我们可以滑雪。

主祈从现

祈使句

一般现在时

Please tell me if you want to go 如果你想去,请告诉我。

  2、if 条件状语从句的省略

  (1)if 从句可省去与主句相同的部分,如:

  I'm happy if you are.

  你高兴我就高兴。

  (注:if从句中省去了happy)

  (2)if 从句常可省去主语和连系动词或助动词 be, 如:

  I will attend your party if possible.

  如果可能的话,我会参加你的聚会。

  (注:if从句中省去了 itis)

  (3)if 常和某些不定代词构成省略结构,如:

  There's no fault to find in her work,if any,she works too hard.

  她的工作无可挑剔,如果要说的话呢,就是她工作太辛苦了。

  (注:if从句中省去了 there is)

  3、单项选择:请从下列选项中选出正确的选项。

  1. You are sure to pass the exam ________ you study hard.

  A.if B.though C.that

  2.I'll go to see the film with you ________ I have time this evening.

  A.whether B.so C.if

  3.We'll stay at home if it ________ this afternoon.

  A.rain B.rains C.to rain

  4.Maybe you ________ if you make some bad friends.

  A.go wrong B.will go wrong C.going wrong

  5.If you ________ early,you will catch the bus.

  A.get up B.getting up C.to get up

  6.Difficulties are nothing if we ________ not afraid of them.

  A.will B.shall C.are

  7.If you ________ to hang up,please press the red button.

  A.want B.wanted C.wanting

  8.I could come earlier ________ .

  A.if necessary B.if any C.if not

  4、用括号内所给单词的正确形式填空。

  1.She will get very upset if I ________ (exclude)her from anything.

  2.We'll stay at home if it ________ (rain).

  3.Plastic will melt if it ________ (get)too hot.

  4.If you ________ (will)wait just for a moment,I'll try to find your papers.

  5.If you won't arrive at the airport in time,please ________ (call)me.

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