by himself在句子中做什么成分?
问题描述：
by himself在句子中做什么成分?
The building shall be constructed by himself.
上句中的by himself 在句中做什么成分?
还有一句话“He has the ability to do the work."
变成疑问句是”Has he the ability to do the work?
答
byhimself作状语
Has he the ability to do the work?
Does he have the ability to do the work?