The book that is on my desk is mine.这句话中第二个定语从句的先行词是什么?为什么第二个从句中不再用关系词?这句话细讲讲吧,

whose book is that on the desk同义句 ________ ________the book on the desk? There is a book that is on the deskThere is a book （that） is on the desk和There is a book on the desk里面的on the desk是不是做定语 The book that I put on the desk is now missing.这句对吗 He is so short that he can't reach the book on the shelf.(改为同义句)He is _____ _____ _____ _____ the book on the shelf.He is _____ _____ _____ _____ _____ the book on the shelf. _____ ____ the book? The book is on the table. the english book is on the shelfthe book on the shelf is an english book This is the best book that there is on the subject可以解释一下这个句子吗,新原题是This is the best book------- on the subject.A.which there is B.that there is C.which is D.what is the book is on the desk. The book is on the desk. The book is on the swing The book on the desk is newer than __ in the desk.A.the one B.that答案选哪一个? is there a book on the desk? Tommy’s book is on the chair. is your book on the desk (陈述句) a book on the table 没有is This is the best book ____ on the subjectA.which there isB.that there isC.which isD.what is This is the book+that定语从句 she said that the book was based on 还是is base on a true storyshe said that the book was based on 还是is based on a true story 说明理由