unit1grammar1.ppt

1、,Unit 1 Life on Mars Grammar 1,can, could, may, might 都可以用来表示请求或给予许可。但用法上有一些区别：,1. can与could can 常用于口语中，表示非正式的请求，请求对象一般是家人或朋友。如： Can I borrow your bike, Simon? 西蒙，我可以借一下你的自行车吗？ Of course. 当然可以。 Can I have some milk, Mum? 妈妈，我可以喝点牛奶吗？ Yes, you can. 好的。,could 是can的过去式，在口语中，could 常用来代替 can向对方更委婉地提出请求，用

2、法上比can正式，可以用于向老师或长辈提出请求，这时could不表示过去，回答一般还是用can。如： Could I use your computer, please? 请问，我可以用一下你的电脑吗？ Yes, you can. 可以。 b) Could I hand in our homework later, Mr Lin? 林老师，我可以稍后交作业吗？ No, you cant. 不，不行。,2. may与might may也可以用来征求对方意见，意为“可以”，相当于could，用法也比can更正式，更礼貌，一般用于向陌生人或所尊敬的人请求许可。如： May I ask you a q

3、uestion? 我可以问你一个问题吗？ Yes, please. 可以，请问。 b) May I come in, Mr Wu? 吴老师，我可以进来吗？ No, you cant . 不行。,might是may的过去式，它也可以用来表示征求对方意见，不过很少用。might在语气上比may更婉转，但不如may表现得那么自信，这时might不表示过去时态，肯定回答时通常用may。如： a) Might I join you? 我可以加入你们吗？ Yes, you may. 可以。 b) Might I have a look at your new plan? 我可以看一下你的新计划吗？ No,

4、 you may not. 不，不行。,Fill in the blanks,This morning was late. If he wanted to come into the classroom, he should say, “_” If I want to borrow a dictionary from a student, I should say, “_ _”.,May I come in?,Can I use your dictionary?,Now If a student wants to borrow a book from me, what should he/sh

5、e say?,Could I use your book, Mr Zhao?,Yes, you _.,can,Could I use your dictionary? Can I use your dictionary?,Can you show us what the two words mean?,From the words above, we can know that we can use can, could, may, might to talk about permission, and these four words have different degrees of fo

6、rmality.,Usage 1,Choose the better words for Simon!,Dad, _ (may, could) I take your camera?,Yes, you _ (can, may).,could,can,_ (May, Can) I borrow this helmet?,No, you _ (couldnt, may not).,May,may not,_ (Might, Can) I borrow your boots?,Yes, you _ (can, may).,Can,can,Usage 2,After borrowing the thi

7、ngs he needs, Simon speaks to his mum. Read the dialogue and fill in the blanks with may, can(not), must(not), neednt, ought to.,S: Mum, _ I use your computer? I want to search for some information. M: Sorry, you _ use it now. I am busy. And I think you _ _ spend more time on your homework. S: _ I d

8、o it now? M: Well, you _. After lunch, you _ have a rest. Then do your homework. You _ use the computer after you finish your work. But you _ play computer games.,could,cant,ought to,Must,neednt,may/can,may/can,mustnt,Usage 3,After getting enough information, Simon needs some friends to make the spa

9、ce kit together. He calls Daniel and Millie. Read the dialogue and fill in the blanks with may, can(not), must.,M: Someone is knocking at the door. _ It be Lucy? S: It _ be Lucy. I didnt call her. I think it _ be Daniel. Ah, yes! Daniel, come in. (5 minutes later, someone else knocks at the door.) S

10、: Mum, please open the door. It _ be Millie. Im sure!,Can,cant,may,must,1. What do drivers do when the traffic lights turn red ?They _stop and wait till the green light .A. must B. can C. may D. need 2. Speak louder please. I _catch what you are saying.A. mustnt B. cant C. neednt D. shall not 3. Miss Liu ,must we wear on school clothes on weekends ? No, you _.A.cant B. shouldnt C. neednt D. mustnt 4. Happy birthday , Jane. This is for you.Thank you! _ I open the b