I wonder when she was herewhen 还可以相等于which加什么?2,The problem is ( )we should do ( )him.a,what,to help b,that,and help c,how ,to help d,why,and help(b,c,d不选的原因,麻烦详细些）
问题描述：
I wonder when she was here
when 还可以相等于which加什么?
2,The problem is ( )we should do ( )him.
a,what,to help b,that,and help c,how ,to help d,why,and help
(b,c,d不选的原因,麻烦详细些）
答
发
答
I wonder when she was here
when 还可以相等于which加什么？
when相当于at which
2，The problem is ( )we should do ( )him.
a,what,to help b,that,and help c,how ,to help d,why,and help
(b,c,d不选的原因，麻烦详细些）
这是一个名词从句( what)we should do ( to)him. 做表语的复合句。
从句意上看出bcd说不通。
答
b,c,d不选是因为do是及物动词 后面应该接谓语 而只有a有 what做它的谓语
when应该等与at which time吧