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______________ help with writing. Mr Wu is always there to help us.who to ask forGroup discussion 5 school rules do we have? What must we do? What mustn’t we do? you are ill and the doctor asks you to stay at home, what will you have to do? must wear school uniforms. must get to school on time. must keep quiet in the library. mustn’t throw rubbish everywhere. mustn’t pick flowers in the garden. will have to ask for leave and stay at home. don’t have to go to school. 表主觀的義務(wù)和必要,主要用于肯定句和疑問句, “必須,得,要 ”。hand v. 交;遞,給hand in 上交,遞交review n. 評論 return renew v.續(xù)借;更新on time準(zhǔn)時Presentation 特殊疑問詞 + 動詞不定式what who when which where howAndy doesn39。Group discussion 2 They are discussing which color to paint the walls. You can ask your parents how much money to take with you.結(jié)論 3:有些疑問詞,如 what, which, whose, how many, how much等,其后可以先接一個名詞,再接動詞不定式。. You must not smoke here. 你不能在這里抽煙。have to 的否定形式 do not have to, 相當(dāng)于need not 。. You must be hungry after all that walking. 走了那么遠(yuǎn)的路,你一定餓了吧。 must C. Can。s the traffic rule. A. can B. may C. have to D. need10. Students in our school ______ know shouting is not allowed in the library. A. can B. may C. must D. needRemember the grammar in this lesson.