介词的宾语从句不用that来引导?

是的 一般用which和whom引导
关系代词whom或which在定语从句中作介词宾语时,介词可放在后面,也可提前构成“介词＋关系代词whom(先行词指人)/which(先行词指物)”引导定语从句.
　　This is the girl whom I borrowed a book from.
　　=This is the girl from whom I borrowed a book.这就是我向她借书的那个女孩.
　　Is this the room which he once lived in?
　　=Is this the room in which he once lived?这是他曾经住过的房子吗?
　　但下列情况下介词不能提前.
　　(1)用who代替whom,that代替which时介词不能提前.
　　He's the boy who I learned English from.这是我向他学英语的男孩.
　　This is the room that he once lived in.这是他曾住过的房间.
　　(2)当whom,which省去时介词不能提前.
　　Is he the boy you went there with?他是你和他一起去那儿的男孩吗?
　　This is the room he lived in.这是他住过的房间.
　　(3)当从句中的谓语是一个动词短语时,动词短语中的介词不能拆开提前.
　　You're the very man whom I'm looking for.你正是我在找的那个人.
　　This is the program which he listened to.这就是他听过的节目.

介词后一般不用that引导宾语从句，个别介词后带有that引导的宾语从句时常先用it作形式宾语，然后再接从句。但是介词后可以接其他引导词引导的宾语从句。例如
I‘m thinking of whether I should help him。我在想是否应该帮他。
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