问三道高中英语题关于非谓语动词
1.Autumn ( ) ,the leaves on the trees turned yellow.
A.coming on B.being come
这道题选a,我想问,四季的到来非得用come on 不是还有一种情况是 be coming 那么为什么不选b?
2."what exactly did you see ,miss wang?'
"your honor,sir,i saw ( )."
a.a bank being robbed with 2 men.
b.2 men robbing a bank.
a我懂,但为什么不选b?
3.i 've got the loaf ;now i'm looking for a breadknife( )
a.to cut it with
b.to cut it by.
请问为什么不选B?