just（刚刚） already（已经） yet ever（曾经） never
A：Have you_____been to yunnan?
B：No,I have _____been there.Michael has _____come back from yunnan.He likes it very much.He says he has _____seen such beautiful scenery before.
A：Have you seen him _____?
B：Yes,I have _____seen him.
可以的话解释一下，谢谢。
ever 用在完成时，表示曾经。
never 从来没有。。
just 刚
never
yet用在完成时的疑问和否定句中。表示还没有。。。
already用于完成时的肯定句中，表示已经。。。
ever
never
just
never
yet
already
just（刚刚） already（已经） yet ever（曾经） never
A：Have you_ever____been to yunnan?
B：No,I have _never____been there.Michael has _already____come back from yunnan.He likes it very much.He says he has __always___seen such beautiful scenery before.
A：Have you seen him __yet___?
B：Yes,I have _just____seen him.
可以的话解释一下，谢谢。