为什么 he have a book 而 l has a book 用 has?

为什么 he have a book 而 l has a book 用 has? does he have a book?对吗? I hope he will buy a book at school.为什么填he will,而不填him to,he to Did he have a key?这里的he是第三人称,为什么不用has而用have? 像__you have a book?,__she/he have a book?什么时候加do什么时候加does? he must have read this book yesterday?反问?did not he?have not he?为什么 为什么He gives me a book 就是双宾语而He offered me his seat就是宾语补足语 He has written a book,the name____I have completely forgotten. he has written a Book _____name i have forgotten. does he have a japanese lesson now?he 是第三人称单数 为什么句中用 have 而不用 has? Does he have a book 能把have改成has吗?为什么?has能不能用在第三人称单数的提问句? I couldn’t possibly have finished such a long book in such a short time.我想知道,为什么用 have finished ,而不用finish? 为什么 He has a book.变复数为They have some books.he 变成了they 但是This is his book.变复数为These are his books.为什么his这个所有格不用变成复数their Let me have a book.为什么加me He was so interested in the book that he___300 pages a night.A.reads B.covered 为什么选B而不选A? Do you have a book是美国人的说法而Have you a book是英国人的说法而 Do you have a book是美国人的说法而Have you a book是英国人的说法而Americans say Have you a book?答案是The text doesn't tell me any information about We each (have) a book. Each of us (has) a book. 为什么一个用have 一个has 详解 he is going to stay at home ( )about a week为什么不用on而用for?请讲明原因,let s ( ) a drink A had B have C having Dto have为什么不用to have而用have?