at a long time和for a long time的区别,请详尽回答

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at a long time和for a long time的区别,请详尽回答
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at a long time和for a long time的区别,请详尽回答
at a long time和for a long time的区别,请详尽回答

at a long time和for a long time的区别,请详尽回答
没有at a long time 表达法
for a long time 意思是经历了很长时间
例句 I have been waiting for a long time.
我已经等了很长时间了.

没有at a long time这个表达，for a long time表示过了较长一段时间。

at a long time是美国口语中用法，在语法和固定词组中没有。
for a long time是固定词组，通常用在完成时里做时间状语，包括过去完成时和现在完成时。

at a long time和for a long time的区别,请详尽回答 是不是只有for a long time,没有for long time和for long times? Jane looked at the photo _____and then said to her mother.A. long a time B.for a long time C. long time D. for long time We walked for a long time at last night改错 so long 和for a long time 有什么区别 long time和a long time区别? 请问wait me for a long time和wait for me a long time 哪个对,理由那wait for me for a long time对吗？ we work for a long time.for? for long 和 for a long time一样吗在疑问句中用什么 we live in Nanjing()a long time.A.at B.for C.in D.on We live in Nanjing ___ a long time.A.at B.for C.in D.on for long与for a long time的区别 we waited a long time for the bus为什么是a long time 而不是long time the long time i waiting for you a long time we work for a long time. He_________(work) there for a long time It's raining for a long time? 英语翻译_____ for a long time