long have you been in this city?—How long have you been in this city?—C twenty years.A.Before B.After C.For D.Since求解析和翻译

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longhaveyoubeeninthiscity?—Howlonghaveyoubeeninthiscity?—____C____twentyyears.A.BeforeB.AfterC.ForD.

long have you been in this city?—How long have you been in this city?—____C____ twenty years.A.Before B.After C.For D.Since求解析和翻译
long have you been in this city?
—How long have you been in this city?
—____C____ twenty years.
A.Before B.After C.For D.Since
求解析和翻译

long have you been in this city?—How long have you been in this city?—____C____ twenty years.A.Before B.After C.For D.Since求解析和翻译
回答是I have been in this city for twenty years.
省略了I have been in this city .
在回答在某地已经呆了多长时间的时候,在时间前都要加for

选择C.
解释：回答可以还原为“I have been here for 20 years.”
A,B选项不能用于这种类型的问句回答。
D选项的since 应该直接接时间点，比如“i have been here since 2009.”这样就可以了。

C for+一段时间，强调时间持续的长度
A和B通常用来回答When引导的特殊疑问句，而且问句是现在完成时，带有before和after引导的时间状语的句子通常不用完成时。
例如：I came to the city before 1980.
如果要用since的话，正确用法是since twenty years ago

翻译你在这个城市待了多久了？
A ：20年之前错
B ：20年之后错
C ：20年 for 加在时间前可以表示一段时间的长度正确
D ：自从20年错

I have been love you to long Have you been in force.i bear you a long I have been loving you for a long time I am sorry you have been waiting so long .BUT How long have you been How long have you been a teacher How long have you been a teacher I have been a teacher for 1998. how long have you been learning english? How long have you been studying? hong long have you been collecting How long have you been in China? how long have you been dancing today? How long have you been there? “How long have you been watching i haven't seen you for a long time,how have you been recentely? you came me after so long before I have been waiting for you是什么意思? i have been brave for long,i decide to live only for you. Oh Peter there you are You have been ages What kept you so long?I m sorry I m so late Sally Have you been waiting long?You have been ages 怎么翻译 ages 是什么用法 Have you been working here long?long是什么词性.