Why are you standing here?I amWhy are you standing here?I am waiting for my son.he ____ back from school.A.didn't comeB.won't comeC.hasn't comeD.hadn't come讲一下为什么
问题描述：
Why are you standing here?I am
Why are you standing here?
I am waiting for my son.he ____ back from school.
A.didn't come
B.won't come
C.hasn't come
D.hadn't come
讲一下为什么
答
A
答
选C.应该用现在完成式.因为这时候的时态是一般现在时,儿他儿子没回学校学校是过去时,现在的过去用现在完成式.意思是,他还没有回到学校.7.现在完成时与一般过去时的区别1）侧重点不同：现在完成时侧重于过去的动作对...