几道关于非谓语的英语题 having done 和 doing

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几道关于非谓语的英语题 having done 和 doing
1、_____(realise) that there had been a serious accident ,she ran off to call the police.
2、_____(see) running across the floor by the cleaner ,the rat stopped,moving its head from side to side.
3、_____(notice) a small white cat walking into the classroom,he smiled happily.
4、_____(leave) a note on the top of the remote,Brian's wife stopped and looked around sadly before leaving their home for the last time.
5、_____(hear) the alarm,they rushedout of the classroom and gathered on the field.
不知道是用having done 还是 doing
顺便说说为什么

/>Realizing

Seen

Noticing

Leaving

hearing

再问：可以解释一下吗
再答： having done这个在状语从句省略中用的不多，因为在表示完成时态这层意思的时候可以直接用doing表示（这点在英语语法中尤为重要），但是如果题目中有明显结构等提示是完成时态，用havin done也是可以的，这个最好找语法书专门看一下。状语从句中省略的主要考察点是动词到底用主动还是被动，也就是doing还是done,主要看主句中的主句和该动词所表达的意思之间的关系式主动还是被动，第一题，realize是she主动发出的，所以用doing，第二题see是rat被动被别人看见的，所以用被动，也就是seen,后面几个题也是一样。。。当然做题的时候首先得确定整个句子是主句+一个省略的状语从句
再问：不是说又先后顺序要用having done吗，比如说：____(walk) up the stairs , i went into the teachers' office to look at the homework. 这个答案是 having walked 我感觉那几题好像都有先后啊

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