Preview 词组翻译 1. hand in the work 2. and so on 3. return the book on time 4. read some reviews 5. recommend so many interesting books 6. in such a short timeLearning aims1.To learn how to use question words with to-infinitives.2.To learn how to use “must and have to” to say that it is necessary to do something.Andy doesnt know _.what to wearMillie cant decide _.which book to buyThey dont know _ to the station.how to goHelping handsWork in groups to find out the rules about question words+ to-infinitives on Page 54.1. We can use a question word with a to- infinitive after a verb.2. We can use a verb + object before a question word with a to-infinitive.3. We can use a noun after what, which, whose, how many and how much.4. We can also use an adjective like sure or clear before a question word.Work out the rulesExcept whyExercise 1 Translate as quickly as possible1. 丹尼尔没有说他要与谁交谈这本书。2. 凯特无法决定先选择哪一个。3. 学生们问老师什么时候上交作业。4. 米莉演示给我们看下一步怎么做。5. 你可以问你的父母要带多少钱。6. 你清楚明天什么时候在门口集合吗？抢答，1分1题1. “疑问词+动词不定式” 结构在句子中 还可以做主语和表语。 e.g. How to deal with the problem is most important to us.The problem is when to leave the place.Do you want to know more about how to use wh-+to infinitives ?2. “疑问词+动词不定式” 结构可以改写成 由该疑问词引导的从句。 e.g. I dont know what to do.= I do not know what I should do.Exercise 21.Gulliver didnt know where he could find other people.Gulliver didnt know .2. Gulliver didnt know how to break the ropes.Gulliver didnt know .where to find other peoplehow he could break the ropes抢答，1题1分Amy and Daniel are talking about their Reading Week. Complete their conversation. Use the correct question words and to-infinitives.Amy: Mr Wu has recommended so many interesting books. Have you decided (1) _ first, Daniel? Daniel: Yes. I want to read Black Beauty first. But I dont know (2) _ the book.how, what, ask for, find when, where, hand in, read which, who, speak, travel, write about which to readwhere to findAmy: You can try our school library or Sunshine Library. Oh, did you know Peter is reading Around the World in Eighty Days? He wants to find out (3) _ around the world in such a short time. Daniel: Wow, thats amazing! By the way, can you tell me (4)_ our book report?how to travelwhen to hand inAmy: Before next Friday. Im still not sure (5) _ in the report. Daniel: You can write anything about your book what the book is about, what you think of it and so on. You should read some reviews about the book before writing.what to write aboutAmy: Thank you. Anyway, I know (6) _ help with writing. Mr Wu is always there to help us.who to ask forAs a student, do you know what to do at school? And how to be a good student?School rules:We must obey school rules at school. What school rules do we have ? What must we do ? What mustnt we do?We mustWe mustnt抢答，1条1分Helping handsWork in groups and find out how to use “must” and “have to”. 1.We use must and have to to say that it is necessary to do something. 2.We use must when the speaker feels that something is necessary. 3.We use have to when the situation makes something necessary. 4. We use must not to say that something is not allowed. We use do not have to to say that it is not necessary to do something.Rules1. 你今天必须完成家庭作业。2. 你不能在这里抽烟。3. 天快黑了，他现在得回家了。4. 他们目前没有必要买电脑。You must finish your homework today.You mustnt smoke here.It is getting dark. He has to go home now. They do not have to buy a computer at the moment.Exercise 3抢答，1题1分注意：must 还可以表示肯定猜测，意思是 “一定” 。否定的猜测是cant。 e.g. You be hungry after all that walking.走了那么远的路，你一定饿了吧。That be Lucy. She has gone to American.那肯定不是Lucy，她已经去了美国。mustcantAmy is telling her cousin Shirley some library rules. Complete what she says with must, must not, have to or dont have to. You (1) _ keep quiet in the library. You (2) _ keep the books clean and tidy. You (3) _ draw or write on the books .must mustmustntYou (4) _ eat or drink in the library. You (5) _ return the books on time. If you want to keep them longer, you (6) _ renew them. You (7) _ bring your student card every time you go to the library, but remember to bring your library card.mustntmusthave to do not have toRules Group workWork in groups of six, discuss and work out some rules for different places at school , such as classroom, dining room, dormitory(宿舍) using must, mustnt , have to and dont have to.抢答，1条1分Summary1.How to use question words with to-infinitives.2.How to use “must and have to” to say that it is necessary to do something.Feedback 一、用括号中所给动词的适当形式填空。 1. Mr Green showed us what _ (do) first. 2. Feng Feng did not know who_(talk) to about this book. 3. Students d