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SAT语法之状语从句的省略

2017/3/31 10:04:37点击数(0)已有0人评论 加入收藏

       在状语从句中,为了使语言更加简洁地道,经常运用省略的形式。SAT语法也会考查这一特殊的句式。状语从句的省略必须满足以下两个条件:

1.主句主语和从句主语一致,或从句主语为it

2.从句的谓语动词是be的某种形式


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       状语从句满足上述两个条件的话,我们就可以把从句的主语和be动词全部省略,从而使语言更加简洁。状语从句的省略的具体规则如下:

1. 当状语从句的主语是it,且谓语动词是be时,省略it和be

       If (it is) possible, he will help you out of the difficulty.

       You must attend the meeting unless (it is) inconvenient to you.


2. 当状语从句的主语和主句的主语一致,且谓语动词是be时,省略从句的主语和be动词。常用于以下几种情形:

      1)连词+形容词

       As (he was) young, he learned how to ride a bike.

       Whenever (she is) free, she often goes shopping.

       2)连词+名词

       While (he was) a young boy, he was always ready to help others.

       Although (he was) a farmer, now he is a famous director.

       3)连词+现在分词

       As (she was) walking along the river bank, she was singing a pop song.

       Although (he is) doing his best in English, he has still got no good marks.

       4)连词+过去分词

       He won't go there with us unless (he is) invited.

       The concert was a greater success than (it had been) expected.

       5)连词+不定式

       He stood up as if (he were) to say something.

       He wouldn't solve the problem even if (he were) to take charge.

       6)连词+介词短语

       She looked anxious as though (she was) in trouble.

       He had mastered the English language before (he was) in the USA.

 

       注意:当从句主语和主句主语不一致时就不能使用状语从句的省略形式。这时,从句部分要么使用完整的形式,要么使用独立主格结构来表达。


When the meeting was over, all the people went out of the meeting-room.

(=The meeting over,)

After their lessons were finished for the day, the children went home from the grammar school.

(=Their lessons finished for the day,)


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