为什么要用以下介词1.whoistheman(that)isstandingoverthere?为什么不用who2.Thatbookistheone(which)Iboughtyesterday.为什么不用that3.Thepen(that)sheiswritingwithisherbrother's.为什么不which?4.Thatistherea
为什么要用以下介词
1.whoistheman(that)isstandingoverthere?为什么不用who
2.Thatbookistheone(which)Iboughtyesterday.为什么不用that
3.Thepen(that)sheiswritingwithisherbrother's.为什么不which?
4.Thatisthereason(that)hegaveatthemeeting.为什么不用which?
请分条讲解一下,不要太复杂.
另外,which和that都可以作主语和宾语,该怎么区分?

