Unit2Grammarandusage教案牛津版必修4.doc

PAGE  PAGE 12 unit2 Grammar and usage教案 牛津版 Step 1: General introduction For reference: 1. If we talk about the ability someone has now, we use the modal verb can. 2. If we talk about the ability someone had in the past, we usually use the modal verb could. 3. If we want to talk about the ability someone will have in the future, we will use the form of the modal verb will /shall be able to. 4. Modal verbs should/ought to (sometimes have to) are always used to give advice or tell someone that he or she is under obligation to do something. 5. If we want to express that it is necessary for us to do something, modal verb must is often used. 6. Model verbs may/might, can/could are often used to ask for permission. Examples: 1. Now, many of us can speak English quite well, but a few years ago, we couldn’t. 2. Shall we be able to be admitted the famous university for further study in a year? 3.You should/ought to learn enough knowledge to serve the people. 4. Every one present at the meeting must look into the matter careful and give as much advice as possible on how to solve the problem. 5. As a student, you have to obey the rules of the school. 6. I’m sorry I am late for class. May/Can I come in? Step 2: Practice 1. 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 doe