情感电台在线收听:I have only been in America ____ two year

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I have only been in America ____ two year.这道题答案为"for",这是为什么?

You use "for" when you are refering to a period of time. An example would be "I have been waiting for 20 mins"

因为这是现在完成时:have/has+p.p(过去分词），for+一段时间用现在完成时

less than 2 years

have been表示完成式，for表示一段时间，一般用现在完成式

我觉得 year 应该加上s

for表示已有一段时间

I have only been in America ____ two year In the mind good friend only puts you on one insignificant status, good is sad, have I been why I have been studying history in China怎么翻译 have been in I would have been drowned . have been in 和have been to 的区别 I doubt whether i will come to his speech next time. It couldn't have been _____ in fact I HAVE Never Been To Me I have been to shanghai 什么时态 I have been working here ____ years.