Unit 6 Electricity Grammar情态动词canmaymust课件(共21张PPT)

1、Module 3 Natural elementsGrammar 情态动词 can, may, mustThe little mouse _ always make fun of the cat.canThe cat always wants to catch the mouse, but he _catch him.The mouse _ always run away from the cat.cantcan_ the cat catch the mouse?No, he _.Cancant_ the mouse run away?Yes, he _.Cancan1. can 表示_，意为

2、_否定：_疑问句：把_可以，能够能力cannot / cant can 放主语前面情态动词: can1. The mouse can always run away from the cat.2. I can swim.3. She cannot (cant) speak French.4. Can he catch the mouse? -Yes, he can. / No, he cant.1. Hi _ play football.2. Lo _ paint.3. Hi _ speak as many languages as Lo.4. Both Hi and Lo _ dance.5

3、. Lo _ drive a car, but he _ play chess.6. Hi _ swim, but he _ play the guitar.cancancancancannot cant cantcannotPractice: P77Complete the conversation with can or can not.1. The cat wants to be friendly to the mouse._ I shake hands with you? Yes, you _.May/Can may/can2. The mouse is hungry, and the

4、 cat is very hungry too._ I take the cake away? No, you _. I will catch you and eat you! May/Can cant/may not1. You may/can watch TV. 你可以看电视。2. You may not / cant watch TV. 你不可以看电视。3. May I watch TV? 我可以看电视吗? - Yes, you may./ No, you may not. Can I watch TV? 我可以看电视吗？ -Yes, you can./ No, you cant.用ma

5、y提问，用may/may not回答;用can 提问，用can/can not回答情态动词: can/maycan 表示_，意为_may 表示_, 意为_许可可以许可可以情态动词: can/may2. may 表示_, 意为_ 表示_, 意为_许可可以4. You may be right.5. He may win. 可能性可能Practice：P78Can/MayMaycanCan/MayCan2. The dog is running after the cat.I _ run fast, or he may catch me!I _ run faster, so I can catch

6、 him and punch him! must must2. The cat and the mouse are bowing(鞠躬) to each other .Must we fight with each other?No, we neednt.情态动词: mustmust 表示_, 意为_ must not / mustnt _ 对must的否定回答_I must run fast, or he may catch me!We students must finish our homework by ourselves.You mustnt play with fire. Must

7、 we fight with each other? -Yes, we must. - No, we neednt.必要性必须禁止，不可以 neednt 不必Practice：P79I must go to bed early.I must take the medicine on time. eat cold food.I mustnt share cups with others.I mustnt go out alone.summary情态动词表示否定语气用法 can能力； 许可 cannot / cant弱 + 动词原型 （V原）疑问句：把情态动词放主语前面 may许可；可能性 may

8、 not弱 must必要性mustnt 不可以; neednt 不必强1.You_touch the switch when your hands are wet. A. can B. may C. cant D. must2.-_I turn on the TV? -Yes, you _.May, may not B. May, may C. Can, cant D. Must, can3.You_leave the cooker on when you are away. It is dangerous.mustnt B. must C. may D. may not 4. You _ p

9、lay with your smart phone with the light off. Its bad for your eyes.A. canB. may notC. mustnt D. must Practice5. -_I borrow your rice cooker? -Sorry, you_. Must, cant B. Can, can C. Can, cant D. May, can6. Must I hand in my homework tomorrow? - No, you _.must not B. cannot C. neednt D. may not7. Everyone in our class _ answer this question. It is so easy!mayB. canC. mustD. should.8. There are a lot of clouds. It _ rain soon.A. mayB. canC. mustD. should.PracticePractice： group wo