Michael was watching TV_____ his father came in.A. when B. while C.
题型：不详难度：来源：
Michael was watching TV_____ his father came in.
A. when B. while C. as soon as |
答案
| A |
解析
试题分析：A. when 当…时候 B. while当…时候 C. as soon as一…就；句意：迈克尔正在看电视时，他的爸爸进来了。came这个动词是个瞬间动词，只能与when连用，故需A
点评：when 既可以与延续性动词连用，也可以与瞬间动词连用，而while只能与延续性的动词连用，强调两者同时进行，多用进行时态的形式。 |
举一反三
--Would you like to ride bicycles with us tomorrow?
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A. because B. when C. if |
You should go over your test paper _____ you hand it in.| A．before | B．though | C．because | D．as soon as |
|
John was walking to school, he saw a cat in a tree.| A．Because | B．Since | C．While | D．If |
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| Li Lei is only 8 years old, _____ he can speak English very well. |
——Can I eat the cake，Mum?
——Yes，you can．_________you must wash your hands first． |
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