如果没有时间状语呢?
追答那就要看语境了,如
Have you been to Beijng?
Yes,I went there last year.
Will you go to the cinema with us?
No, I have seen the film.
另外,现在完成时,强调过去的动作对现在造成的影响,但属于现在的时间范畴,所以可以和一般现在时态并列
一般过去时单纯描述过去,和过去的时态并列
BOTH HIS PARENTS LOOK SAD MAYBE THEY —————— WHAT HAPPENED TO HIM
分析一下这句用过去时还是现在完成时?
have known
句意:他的父母看起来很悲伤,可能他们已经知道他发生了什么。
“知道”这件事情对现在造成了影响→ 悲伤
没有时间看呢?
追答上下文的语境