Unit1&Unit2 语法情态动词课件 2023-2024学年高中英语外研版（2019）必修第二册

Using Language Modal verbs Play a game How many modal verbs do you know? Let's see who will get the most. How many modal verbs do you know? Using language 1 Look at the sentences from the reading passage. Think and work out the meaning 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,... 能，能够 不敢 必须，不得不 最好 不必，没有必要 Using language a. be able to b. dare not c. have to d. had better e. needn’t 1. be afraid to do sth. 2. not be necessary to do sth. 3. give advice to do or not to do sth. 4. be necessary or give strong advice to do sth. 5. have the ability to do something Match the words in bold with the meanings. 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! 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. 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。没有人称和数的变化（be able to，have to 除外） 情态动词表示说话人的某种语气或情绪，如可能、意愿、猜测、义务、需要等。 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。 02 Studying the rules 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“