Unit2 sporting events - Grammar and Usage教案

step 1: general introduction step 2: practice1. now look at the blackboard, i’d like you to explain the meanings of the different modal verbs used in this sentence:i might/may/could/should/ought to/will/must watch the tv programme tonight.when might is used, it shows that the speaker is uncertain whether he or she will do something. when may is used, it shows that the speaker is s bit more certain than when might is used. could is more certain than may, but less certain than should and ought to. should and ought to are more certain.when we use will, we mean we are quite certain that we will do something.if we use must, we are almost certain to do something.2. if you want to have a look at your friend’s book, what do you say? (can i have a look at your book?)what does your friend say to you? (‘of course, you can.’ or ‘sorry/no, you can’t)so can is also used to ask for permission, especially in informal or spoken english.3. now read part 1 on page 28 to find out how modal verbs are used to talk about ability, obligation, certainty and permission. pay attention to the three arrows that illustrate the degrees of obligation, certainty and permission when modal verbs are used.4. read part 2 and use modal verbs to make requests, suggestions or offers, and give advice. e.g.:will/can you read the sentence once more? (to make a request.)shall we watch a film tonight? (to make a suggestion)i will help you if you have any problems (to make an offer)the manager is not in now. you should come back at three o’clock (to give advice)5. now please read the instructions for the exercise on page 29. then complete the article individually and i will check the answers later.

 (1) must     (2) has to   (3) must  (4) must  (5) should  (6) ought to  (7) could    (8) may  (9) could

6. read part 4 on page 28 and try your best to understand why the continuous form or the perfect form is used with a modal verb in the example sentences. first i’ll give you some examples:

john isn’t here to attend the party. he must be reviewing his notes for the big exam tomorrow. (the speaker thinks that john is reviewing his notes now.)

tom knows nothing about the subject. he can’t have been at the lecture yesterday. (the speaker is sure that tom did not go to the lecture yesterday.)

the money is gone. who could have taken it? (the speaker does not know who has taken the money.)