This book is difficult for you to read.中的to read做什么成分?

This book is difficult for you to read.中的to read做什么成分? the book is difficult to read里面的不定式做什么成分 I happened to read this book.中的不定式是做什么成分. Is this book too difficult for him to read?翻译下 this passage is _ difficult for a child to read. this book is very____do you want to read it This book is worth to read The book is ( ) for him to read. The book is easy enough for you to read.(改为同义句） The book is This book is s( ) for children to read.She is a little d( ). for my litter sister,this,do you think,a good book ,to read, This is a book which I like to read.书中说which做read的宾语,哪位童鞋能帮我