Unit 13 Healthy eating 教案2

(bb:3.we should/ought to respect our teachers and parents.
4.you shouldn't/ought not to be so careless.)
t:now look at the blackboard.in our daily life,we often give advice or our opinion about something.even we're trying to advise someone to do or not to do something.in such an condition,we'll use the modal verbs“had better,should/ought to”.of course,you should also pay attention to their negative forms.“not”should be put behind“better”and“should”or“ought”.this point is very important.
(teacher underlines“had better,had better not,should,shouldn't,ought to,ought not to”as he speaks.)
t:now let's go back to the textbook.look at the grammar:modal verbs—had better,should,ought to.
(teacher begins to deal with it with the whole class,then with part 1.)
step ⅳ. practice
t:look at part one.the doctor is giving advice.complete the following sentences,using “should,ought to,had better or their negative forms to give advice.”you're given four minutes to do them.first do them by yourself.then read to each other.at last i'll ask some students to read your advice.
(teacher goes among the students to check their filling,then picks out some typical advice and lets some students read them to the whole class.)
suggested advice:
1.you have a bit of a fever.you had better drink more water and have a good rest.
2.you shouldn't smoke any more if you want to be healthy.
3.if you are sick,you ought to go to see a doctor at once.
4.you'd better not eat it if it is not ripe.
5.you don't look well.you  should let me make a careful examination for you.
6.you have a bad cough.you oughtn't to go on working.you should have a good rest.
7.this medicine will make you sleepy.you should take one pill now and one more in four hours' time.
8.there's nothing serious with your knee,but you'd better take some medicine and have a rest.
t:ok.we all know that most newspapers have an advice column.people can write and ask for advice about their problems.have you read such letters asking for advice?
ss:yes/no.
t:here is a letter.please read it.
(show the following letter on the screen.)
 
dear marty,
i've got a problem and as i don't know what to do i thought i'd write to you and ask for your advice.
i've been working at a meat factory for about two months now.it's a part-time job,so i only work in the evening.i've recently noticed that one of my workmates is stealing.from time to time,i notice that he puts a piece of meat down his trousers just before he leaves the factory.now the manager has found that things are missing.he says that all this happened after i started work.