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1、Unit 4 Exploring literatureGrammar and usage【学习目标】1. Understand different types of modal verbs;2. Know how to use modal verbs in new conditions. 预习案【学习过程】Step 1: 自主学习任务一：自学课本unit 4的词汇与短语。要求：根据录音及单词音标，首先会读单词接着边读边写记单词，注意中英文的转换，最后默写单词。Step 2: 单词自学检测探究案【合作探究】Step 1 Lead-inHow can we choose good books?St
2、ep 2 Exploring the rules Below is a website article about how to choose books. Find the sentences that use modal verbs and fill in the table below. The first one has been done for you.Step 3 Working out the rulesModal verbs can express ability or necessity. They can also make suggestion or describe
3、the probability of an event. The same modal verb can have different functions. Modal verbs can be followed by _a. do (the base form) b. doing (the verb-ing form) c. did (the past form) d. be done (the passive voice) e. be doing (the continuous form) f. have done (the perfect form) Step 4 Exploring m
4、ore about the rules Ability: can/be able to Can you run 1,500 metres in five minutes? Even a small personal computer can store vast amounts of information. Are you able to run 1,500 metres in five minutes? Will you be able to speak English fluently in five years? Jim could/couldnt run fast when he w
5、as young. He was able to drive when he was a student.Working out the rules of can and be able to. 1. We can use _ to express ability at present. 2. We can use _ to express ability in the future. 3. We can use _ to express ability in the past. Necessity: must, have to I must book a hotel for my trip
6、next week. We have to wear a uniform at work. Must we finish our work today? Yes, you must finish it as quickly as possible. ( No, you dont have to. / No, you neednt.) Must you play the piano at such a late time? Its midnight. Must you spoil everything? Why must you always be so suspicious?Working o
7、ut the rules of must and have to. 1. We use _ when we decides that something is necessary or needs to be done; we use _ when somebody else other than us has made the decision. 2. To answer the question introduced by must, we use _ for a positive answer, and _ for a negative answer.3. _ can be used i
8、n questions to tell someone that their behaviour makes us upset or annoyed. Step 5 Applying the rules 1. Apply the rules in sentences. B1 For the following groups of three sentences, tick the sentence which uses the modal verb differently from the other two.2. Apply the rules in discourses.1. shall/
9、will(1) I have told him again and again to stop smoking, but he _ listen. (2) _ you come with me to visit Uncle Bill? (3) _ we start the project right now?2. must/need(1) You _ smoke in the hospital. It is bad for the patients.(2) We _ get up too early tomorrow morning.3. can/be able to(1) He _ swim
10、 across the English Channel, but he didnt feel like it that day.(2) Mary _ play the piano since she was 5.4. should/ought to(1) I dont care what people think. Well, you _.(2) Dont ask me! How _ I know?(3) Try phoning Mikehe _ be home by now.Translate the following sentences into English.1. 过马路时越小心越好
11、。You _ cross the road.2. 凡事都有两面性。动听的歌曲有时候对别人来说就是噪声。 Everything has two sides. Beautiful songs, sometimes, _.3. 我们学校的一个规定是每个学生在校期间都得穿校服。One of our school rules is that every student _while at school.4. 我再也不会那样做了。I _ that again.B2 Below is an entry in a students reading journal. Complete the entry wit
12、h the correct modal verbs in the brackets.Fill in the blanks with proper words. If you feel stressed by responsibilities at work, you (1) _ take a step back and identify those of greater and less importance. Then, handle the most important tasks first so youll feel a real sense of (2) _ (achieve). L
13、eaving the less important things until tomorrow (3) _ (be) often acceptable.Most of us are more focused (4) _ our tasks in the morning than we are later in the day. So, get an early start and try to be as productive (5) _ possible before lunch. This (6) _ give you the confidence you need to get you
14、through the afternoon and go home feeling accomplished.Recent (7) _ (study) show that we are far more productive at work if we take short breaks (8) _ (regular). Give your body and brain a rest by stepping outside for a while, exercising, or doing something you enjoy.If you find something you love d
15、oing outside of the office, youll be less likely (9) _ (bring) your work home. It (10) _ be anythinggardening, cooking, music, sportsbut whatever it is, make sure its a relief from daily stress rather than another thing to worry about.3. Apply the rules in real situations.B3 In pairs, make rules for
16、 your school library using modal verbs. Use the following examples to help you. You must study quietly in the reading room. You must not eat or drink in the library. You can use the computers to find books in our library. You can borrow two books at a time and keep them for as long as two weeks.【Homework】1. Finish exercise C on page 76 of the textbook. 2. Write a notice for the school library, using the sentences you have written in class.