I was walking along the street _______ I met a friend of mine.A.while B.when C.as D.since 要原因

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I was walking along the street _______ I met a friend of mine.A.while B.when C.as D.since 要原因
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I was walking along the street _______ I met a friend of mine.A.while B.when C.as D.since 要原因
I was walking along the street _______ I met a friend of mine.A.while B.when C.as D.since 要原因

I was walking along the street _______ I met a friend of mine.A.while B.when C.as D.since 要原因
B 对
当一个动作发生另一个动作正在进行.
注:A 后的动词一般用进行时; C 与D 没有这种用法
加油!不明白再问!如果帮到你,请采纳,谢谢!

选B, 这句话的意思是当我看到我朋友时我正独自走在大街上,while引导的是非延续性词,而when引导的是延续性词,CD意思与句子意思不符

选B 此题是考查while ,when 和as 的用法,表“当....的时候”
when 常用于此句型:...be doing ...when ...did...(当某人正在做。。,这时突然。。)或 ...be about to ...when ... did..(当某人即将要做。。这时突然。。)
while 强调两者都在做。。(并隐含一种对比)如:I was readi...

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选B 此题是考查while ,when 和as 的用法,表“当....的时候”
when 常用于此句型:...be doing ...when ...did...(当某人正在做。。,这时突然。。)或 ...be about to ...when ... did..(当某人即将要做。。这时突然。。)
while 强调两者都在做。。(并隐含一种对比)如:I was reading newspaper while my father was watching TV.
as 强调两个动作同时进行,意为:一边。。。一边。。。
如:He went out of the classroom as I came in .

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