从句,疑问句后什么时候要加介词?比如纸是用来写的.paper is to writer还是writer on?
问题描述:
从句,疑问句后什么时候要加介词?
比如纸是用来写的.paper is to writer还是writer on?
答
从句,疑问句后什么时候要加介词?
比如纸是用来写的.paper is to writer还是writer on?