2020新外研版必修二英语U1P3 Using language ppt课件（含教案）.ppt

1、Unit 1 Food for thought Using language 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 .wed better not eat too much roa

2、st food as it may make us suffer from heat inside our bodies, . e “ You neednt try it if you dont want to,” Mum said,. Look at the sentences from the reading passage. Think and work out the meanings of the words underlined. Observe and discover Whats the meaning of the words underlined? Modal Modal

3、verbsverbs( (情态动词情态动词) ) can be used to express the speakers meaning of possibility, permission, obligation and advice, ability, etc. be afraid to do something have the ability to do something be necessary or give strong advice to do something give advice to do or not to do something not be necessar

4、y to do something Modal verbs be able to dareneed have to had better 1. a) be able to 后接动词原形，表示后接动词原形，表示某人做某事某人做某事 的能力的能力，可，可用于大多数时态用于大多数时态。 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。火灾发生时，他们设法从那栋建筑里逃了出去。 b) be able to 用于用于过去时态过去时态时，可以表示时，可以表示 “某人某人 过去或

5、当时成功地做了某事过去或当时成功地做了某事”。 2. a) dare 作作情态动词情态动词时，时， 主要用于主要用于否定句否定句、 疑问句和条件从句疑问句和条件从句中，一般不用在肯定句中。中，一般不用在肯定句中。 Im so afraid that I dare not move. 我吓得一动也不敢动。我吓得一动也不敢动。 Dare she ring him at the office? 她敢打电话到办公室找他吗？她敢打电话到办公室找他吗？ 2. b) need 表示表示 “需要需要”或或 “必须必须”, 作作情态动词情态动词时，时， 用于用于否定句和疑问句否定句和疑问句中，在肯定句中一般用中

6、，在肯定句中一般用 must, have to, ought to或或should 代替。代替。neednt表表 示示“不必；不需要不必；不需要”。 You neednt tell him about it. He has known it. 你不必告诉他这件事。他已经知道了你不必告诉他这件事。他已经知道了。 2. c) dare 和和need 常用作常用作实义动词实义动词，有，有时态、时态、 人称和数的变化人称和数的变化。所不同的是，作。所不同的是，作实义动实义动 词词时，在时，在肯定句肯定句中，中，dare+带带to的不定式的不定式； 在在否定句和疑问句否定句和疑问句中，中，dare+带带

7、to/不带不带to的的 不定式不定式。 I dare to swim across this river. 我敢游过河去。我敢游过河去。 He didnt dare (to) say what he thought. 他不敢说出他的想法。他不敢说出他的想法。 He does not dare (to) answer. 他不敢回答。他不敢回答。 3. a) have to 的含义与的含义与must相似，两者往往可以相似，两者往往可以 互换使用，但互换使用，但have to 有各种时态有各种时态，且，且强调客强调客 观需要观需要，意为，意为 “不得不不得不”。 Its dark now. I ha

8、ve to go home. 现在天黑了现在天黑了，我必须回家我必须回家。 I have to leave because of the bad weather. 因为天气不好，我不得不离开了。因为天气不好，我不得不离开了。 Do you have to wear uniforms at school? 你在学校必须穿校服吗？你在学校必须穿校服吗？ You dont have to/neednt go if you dont want to. 如果你不想去，就不必去。如果你不想去，就不必去。 3. b) 否定形式是否定形式是dont have to，相当于，相当于neednt。 4. had

9、better 后接动词原形，意为后接动词原形，意为 “最好最好”, 用于用于现在或将来时现在或将来时，可用于，可用于一切人称，没一切人称，没 有任何词形变化有任何词形变化。 had better 的否定式是的否定式是 在其后加在其后加not,疑问式是把疑问式是把had和和not 提前。提前。 Youd better sit here and have a rest. 你最好坐在这儿休息一下。你最好坐在这儿休息一下。 She had better not tell lies any more. 她最好再也别撒谎了。她最好再也别撒谎了。 Hadnt the doctor better see hi

10、m? 医生是不是去看看他比较好？医生是不是去看看他比较好？ Underline the modals in the introduction to an app and talk about their meanings. (P. 5) be afraid to do something not be necessary to do something be necessary to do something have the ability to do something dont have the ability to do something give advice to do some

11、thing Complete the tips for good table manners with the correct forms of modals in Activity 1. (Page 5) have to dare not had better neednt be able to From: Anna J To: Gary Newlands Subject: Travel tips Gary, I know you havent done such a long flight before so I thought I (1) d better give you a few

12、tips. First, you (2)_ make sure you get to the airport really early because you always (3) _ spend ages getting through security. You (4)_ be prepared for them to open all your hand luggage too. Your flight is an early one so, with luck, you (5)_ be able to get a seat in the business lounge. You (6)

13、_ (not)pay for breakfast as its free there. When your flights called, you (7)_ start moving to the gate immediately because sometimes you (8)_walk for about fifteen minutes. You(9)_(not) take very heavy hand luggage because you(10)_carry it yourself and you cant take a trolley to the gates. Everyone

14、 agrees there (11)_ be some, of course, but there arent. You get a meal on the fight of course, and you (12)_ eat it even if it doesnt taste very interesting, because theres nowhere to eat until you reach your hotel at the other end. If you have any questions, email me. Regards, Anna Complete the em

15、ail with “had better, should” or “have to”. Sometimes there is more than one answer. should had better have to should dont have to should have to had better not have to should have to SelfSelf- -evaluationevaluation Can you use these Modal verbs (be able to, dareneed, have to, had better ) correctly? 1. Finish the Exercises of the Grammar part in Learning English. 2. Preview the Developing ideas on pages 8-9.