七年級(jí)英語(yǔ)下冊(cè)-Unit-6-Electricity-period-3-Grammar課件-牛津版

1、 I play basketball well. you? No, I . But I swim fast. I sing beautiful songs. you? No, I . But I play konfu. you? No, I . A can and cannot We use and to say we are able or not able to do things. We use electricity to do many things. We electricity. you think of an example? Yes, I ./ No, I . 1.Hi _

2、play football. 2.Lo _ paint pictures. 3.Hi _ speak as many languages as Lo. 4.Both Hi and Lo_ dance. 5.Lo _ drive a car, but he _play chess. 6.Hi _ swim, but he _ play the guitar. Yes, you . I sit down? _ _I come in? Yes,you . No, you /cant. B may and may not We use and to ask for and Give permissio

3、n(許可）. We also use and for the same purpose. I use you mobile phone? Yes, you . No,you How are you feeling,Daisy ? Not very well. _I get you a chair? Yes, thanks May Im going out. _ I borrow your new bicycle? Yes,you may.Before you go to meet your friends,can you come and see the doctor with me? Yes

4、, I_._I carry your bag for you? Yes,thats very kind of you, Benny. I m ready to go._you open the door for me? Yes,I can Thanks We save water. We not waste water. You smoke. Must you do homework now? Yes, I must. Must you do your homework? No, I neednt.Can you play with me? Sorry, I cant.You may/can

5、play with Jim. C must and must not We use and to tell people what to do or what not to do. You do that Benny! We always be careful with electricity. They play near the heater. drink more water go to bed early eat cold food share cups with others go out alone take the medicine on time 1.I must drink

6、more water. 2._ 3._ 4.I must not_ 5._ 6._ The doctor told what to do and what not to do I must go to bed early. I must take the medicine on time. eat cold food. I must not share cups with others. I must not go our alone. 情態(tài)動(dòng)詞（modal verbs):表示說話 人的語(yǔ)氣或情態(tài),如請(qǐng)求、命令、愿望、 能力以及可能性等。英語(yǔ)的情態(tài)動(dòng)詞 有: can/could may/mig

7、ht must ought to shall/should will/would dare/dared need have to 能夠 可能 必須 應(yīng)該 應(yīng)該 意愿 敢 需要 不得不 + 動(dòng)詞原形 can/ could 能,能夠,會(huì)，可以 We can speak Chinese. He can draw pictures. 許可 You can (=may) go home now. 表懷疑,難以置信 He couldnt(cant) be her father, For hes too young. 注意:could為can的過去式外,could還有表 示語(yǔ)氣婉轉(zhuǎn)之義。 Could I c

8、ome in?比Can I come in?更有禮 貌。 但答語(yǔ)還用Yes, you can. No, you cant. may/ might 允許;請(qǐng)求 May I have a glass of water? May you borrow me your pen? 可能;也許 (may比might語(yǔ)氣強(qiáng)） They may be in the library now. He might be at home. 表示祝愿 May you always be young. 注意:might為may的過去式外,might還有 表示語(yǔ)氣婉轉(zhuǎn)之義。Might I have a look? 比May

9、 I have a look?更有禮貌。但答語(yǔ)還 用Yes, you may. No, you may not. must 必須;應(yīng)該 We must work harder. Must not意為不應(yīng)該;不許; We must not be afraid of difficulties. You mustnt smoke here. 注意:must的提問肯定回答用must,否 定用 neednt -Must I return the book? -Yes, you must. -No, you neednt. 情態(tài)動(dòng)詞記憶口訣 情態(tài)動(dòng)詞兩要點(diǎn); 動(dòng)詞原形跟后面, 說話語(yǔ)氣較委婉, 表能力 許

10、可, 責(zé)任或義務(wù), 否定回答neednt 換; 應(yīng)該, 愿, 被迫 ,表客觀. 1.-_I download the article again? -No, you neednt. A.Shall B.Will C. Must D. Can 2.-Must I stay at home, Mum? -No, you _. A.neednt. B.mustnt C. dont D.may not 3.-May I go out to play basketball, Dad? -No, you _. You must finish your homework first. A.mustnt B may not C. couldnt D. might not 4.A computer _ think for itself. It must be told what to do. A.cant B. couldnt C. may not D. should 5.-Could I borrow your dictionary? -Yes, you _. A. might B. must C. can D. should 6.-_ the man there be our new teacher? -He _ be, but Im not sure. A.