状语从句怎么改非谓语动词

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状语从句怎么改非谓语动词

状语从句怎么改非谓语动词
状语从句怎么改非谓语动词

状语从句怎么改非谓语动词
当状语从句的主语和主句的主语一致,并且含有be动词,或者状语从句中含有it is,我们可以把状语从句的主语和be动词(或it is)省略,这一块应属于省略的内容,但其实非谓语动词需要这样来理解.请看例子:
例1:When i was walking in the street,i saw him.
可以变为:1)When walking in the street,i saw him.(其实这也是连词+分词的结构)
也可以变为2)Walking in the street,i saw him.
(这时分词walking的逻辑主语就是句子的主语i,之间是主动关系I walk)
例2:When the park is seen from the top of the hill,the park looks beautiful.
可以变为:1)When seen from the top of the hill,the park looks beautiful.(连词+分词的结构)
2)Seen from the top of the hill,the park looks beautiful.
(这时分词Seen的逻辑主语就是句子的主语the park,之间是被动关系see the park)所以,当状语从句的主语和主语的主语保持一致(也就是说分词的逻辑主语就是句子的主语),如果是主动关系,我们就用现在分词;如果是被动关系,就用过去分词.
例3:When i was passing by,a man was hit by a car.
但如果从句的主语和主句的主语不一致(也就是说分词的逻辑主语不再是句子的主语),我们就要采用独立主格结构,这句话应改为:
I passing by,a man was hit a car.
或者:(when) passing by,i saw a man was hit by a car.
例4 If it is possible,please call me in time.可改写为If possible,please call me in time.(当然这句话不是分词,只是用来解释我上面所说省略it is 的情况)
自己敲了半天,