定语从句!This is Tom,who I think has something to do with us.为什么这里的who不能改成whom?whom和who有什么区别?

【拆分定语从句】This is the boy who gave Tom a kite将一个句子拆分成两个句子.This is the boy who gave Tom a kite.This is the kite which Billy Fisher gave to TOM. 定语从句!This is Tom,who I think has something to do with us.为什么这里的who不能改成whom?whom和who有什么区别? i met TOM who is my best friend .是什么从句是同位语还是定语从句, 修攺丅列定语从句： This is the watch for which Tom is looking. ___________________________________ 定语从句this is the man who I am told is responsibleis responsible也算the man的定语吗 定语从句 This is the man I met yesterday中省略的是who还是whom 定语从句 先行词的位置例如：Tom is a boy.Tom comes from England.应该是：Tom is a boy who comes from England还是：Tom who comes from England is a boy? 在定语从句中 that与who witch的用法区别This is the kite _____ Billy gave to Tom要填that 还是 which?问问什么时候不可以用 that 什么时候不可以用which? This is the book+that定语从句 whose whom who 在定语从句中的区别Tom is a boy( )I find hard to ( ).A:whose pleaseB:that be pleasedC:who be pleasingD:whom please He is an honest man called Tom.是不是定语从句 Tom and lucy who is from U.S.； tom and lucy, who is from China.第一句到底谁来自美国 哪个来自中国 是就近么后一句是非限制性定语从句 定语从句的结构The boy who is under the 将下列句子改为定语从句 Who is a servant? 定语从句 Who is the man__ you just talked to? 定语从句1.Anyone ___ this opinion may speak out.A.that againsts B.that againstC.who is againstD.who are against我选的是AwHY 用关系代词who,which,that将两个句子合并为一个含有定语从句的句子.（1）He enjoyed the.Thr book was written by Mark Twain.（2）The funny story is form a book.The book is called The Adventure of Tom Sawyer. （3）This is Mu hello!_______?this is tom.a.who is this b.who is that 为什么?