_____________the policeman heard the cry for help ,he rushed

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_____________the policeman heard the cry for help ,he rushed out of the room.
A.As soon as B .While
麻烦大家讲下这两者的区别,这两者的用法``` .

1.答案：A.
2.翻译：这个警察一听到呼救声,他就冲出了房间.
3.
1）as soon as “一...就...”；while“当...时候”
2）此句中两者的区别很简单：
while引导的时间状语从句中的谓语动词必须是延续性动词.如：
Somebody knocked my door while I was sleeping.(sleep是延续性动词)
而as soon as所引导的时间状语从句的谓语动词就没有此类要求.
3）此题中的heard意思是“听到/听见”(表结果),明显是一个瞬间性动词,所以不能用while.

_____________the policeman heard the cry for help ,he rushed 一道英语选择题：-----the policeman heard the cry for help,he rushed As soon as Mrs Smith heard the cry for help ,___and rushed t ----- they heard the shout for help,they rushed out. ()he heard a girl crying for help outside,he rushed out of t 21.______ the cry for help,the people immediately rushed out ____the cry for help,people immediately rushed out of the ro 40.________ they heard the shout for help,they rushed out. A ________ they heard the shout for help,they rushed out 为什么Th 初中英语when he heard a cry for help .he ran out as __as he coul suddenly he heard someone _____(cry )for help.答案上是crying,为什么英语改错 “He couldn't help to cry when he heard the news”