it is three years since i have seen him
it is three years since i have seen him
it is three years since i saw him
有什么不同.表达效果还是意思什么的?
it is three years since i saw him
有什么不同.表达效果还是意思什么的?
英语人气：645 ℃时间：2019-09-23 09:57:05
优质解答
It is three years since I have seen him我已经三年没见过他了.（见他这一动作持续三年都没有发生过,直到现在.）since 后是现在完成时It is three years since I saw him自从我见到他以来已经三年了.（从过去见到他...
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