改错 英语I am going to have a cup of coffee behind my lunch

1）
I am going to have a cup of coffee behind my lunch
这里behind改成after ,因为午饭后是after lunch
2）
He should tells his mother the truth.
tells改成tell因为should后面接动词原形
3）
I have yet finished my work so far.
have改成haven't,表示还没有完成,因为句子中有yet表示否定意思的
4）
We haven't seen her since five years.
years后面加ago,表示自从五年前我们就没看过她
5）
I stayed at the home yesterday afternoon.
the去掉,待在家里直接是stay at home
6）
Hey,Mike!I saw you in televsion last night.
in改成on,介词搭配问题,在电视上是on
7）
I have gone to ShangHai many times.
gone改成been,因为gone不是延续性动词
8）
Have you know her for long ago.
know改成known这是因为前面有have表示完成时

I am going to has a cup of coffee behind my lunch . 比一定对啊！我也是瞎猜的 。