题目内容：

i want to know＿＿ to help my neighbour.
i want to know＿＿ to help my neighbour.
A.what can i do B.what to do C.how i can do D.how to do

优质解答

A.要用陈述语序.
C.D.do 后面要加宾语
what to do.特殊疑问词+do的形式相当于一个定语从句.what 是do 的宾语