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课件网) Unit 1 Food for thought Using language —Listening Modal Verbs U1 Grammar—Modal Verbs 情态动词 情态动词短语 现在式 过去式 can could be able to may might must have (got) to shall should ※ought to will would Now, Let's check the answers and see who did the best. Modal verbs Activity 2: Look at the sentences from the reading passage. Think and work out the meanings of the words in bold. a. … I was able to hold a knife and fork - and chopsticks! b. But there are still some dishes that Dad dare not try even after many years of marriage to my mother. c. … Mum and I just have to find a way to get him into the kitchen! d. … we'd better not eat too much roast food as it may make us suffer from heat inside our bodies, ... e. “You needn't try it if you don't want to,” Mum said, … 1. be afraid to do something 2. not be necessary to do something 3. give advice to do or not to do something 4. be necessary or give strong advice to do something 5. have the ability to do something Pair work Work in pairs and talk about the function of modals. Then match the meanings to those modal verbs. a-5 b-1 c-4 d-3 e-2 If you dare not try a “painful” diet to stay healthy, this new app is the perfect solution-and you needn't pay for it !The app works by quickly showing photos of different food. All you have to do is select the photos of healthy food. Then you'll be able to train your brain to select healthy food in real situations. So , if you're a sugar addict and aren't able to say no to chocolate or cola, you had better download it now! Activity 3: Underline the modals in the introduction to an app and talk about their meanings. be afraid to do sth. not be necessary to do sth. be necessary to do sth. have the ability to do sth. give advice to do sth. don't have the ability to do sth. 总结情态动词 be able to, dare&need, have to, had better的用法 Modals 情态动词 (1) 情态动词（Modals）本身具有一定的词义，不能独立作谓语，必须和动词原形一起构成谓语。情态动词虽然数量不多，但用途广泛。 常用的情态动词包括can (could), may (might), will (would), shall (should), must, need, dare, had better, ought to, used to等。 be able to后接动词原形，表示某人做某事的能力，可用于大多数时态。用于过去时态时，还可以表示“某人过去或当时成功地做了某事”。例如： I will be able to speak Japanese in another few months. 再过几个月，我就能讲日语了。 They were able to escape from the building when the fire broke out. 火灾发生时，他们设法从那栋建筑里逃了出去。 1. be able to be able to表示“能力”时，和can的用法相似。但也有区别： be able to有多种时态，如: was / were able to, will / shall be able to, have / has been able to等, 而can只有两种时态，即can和could。 be able to强调通过努力而获得的能力，而can则强调自身已具有的能力。如： She can sing the song in English. 她能用英语唱这首歌。 He will be able to sing this song in English in a few minutes, too. 几小时之后，他也能用英语唱这首歌。 【be able to 与can的辨析】 be able to 强调一种结果，而c ... ...
