课件12张PPT。陕旅版六年级英语下册 How long may I keep the bookLesson 9 Please return it tomorrow.I want to borrow a book.I want to borrow your pencil.Please return it next week.You’d better return the book in two weeks.You can keep the books for two weeks.—how long‘多长时间’How long do you go to zoo ?How long does he go shopping?-must比 had better to语气更强硬
更有命令性homework What must we do
if we can't finish it? 再见
