He gave me a book yesterday.The book is very interesting.(合并

He gave me a book which is interesting. He gave me the book The book _____ he bought yesterday is very interesting .A./ He gave me a book which is interesting.先行词是a book A book is You gave me a book which is interesting.You gave me the book He gave me a book which is interesting.这句中a book是不是先行词 which He gave me a book which is interesting.which指代的是不是a book 改为简 The book _____ he bought yesterday is very interesting.A、\ B The book he bought yesterday is very interesting. A. who B.w The book you gave me is interesting.改为简单句是不是A book is intere He gave me a book which is interesting 可不可以这样理解：先行词是a book a He gave the book to me yesterday的同义句 He gave me a book.which is interesting.为什么说这句先行词是a book啊 为什么