1、Welcome to our classSeptember.29Teaching Objectives1. Learn common features of modal words2.Learn to use modal words: should, ought to3.Learn to practice orally with should,ought toTeaching Contents1. The features of modal words2. Modal words: should, ought to3. Oral practice4. HomeworkThey can do t

2、heir homework.She can play table tennis.He can wash clothes.Mr.cans DiaryThey can do their homework.She can play table tennis.He can wash clothes.Can I do anything ?Of course, I can do something.什么是情態動詞？ 情態動詞是一種本身有一定的詞義，但要與動詞原形一起使用，給謂語動詞增添情態色彩，表示說話人對有關行為或事物的態度和看法，認為其可能、應該或必要等。情態動詞的特征1.不能單獨做謂語，必須與其他動

3、詞一起構成謂語2. 沒有人稱和數的變化3. 情態動詞后一律接動詞原形4. 具有助動詞功能情態動詞should1.You should help your mother with the housework. （肯定句） 你應該幫你母親做家務. 2. You shouldnt lie to your mother.（否定句） 你不應該對你母親說謊。3. Should I wear a coat? （一般疑問句） Yes, you should.是的，你應該。 No, you shouldnt.不，你不應該。情態動詞ought toWe can use modal words ought to t

4、o say what is best or right to do.1.She ought to finish it by next week. 下星期她應該完成了。2. You ought not to do it. 你不應該做此事。3. Ought he to start now? 他現在該動身了嗎？Yes, he ought (to) . 是的，該動身了。No, he ought not (to).不，不該動身。should 與ought to 的比較1.表示“應該，應當” 等，兩者可互換，只是ought to的語氣稍重。如： You ought to/should work harde

5、r than that. 你應當更努力地工作2. should 強調主觀看法，而 ought to 強調客觀要求。如： We ought to go and see my mother in hospital tomorrow, but I dont think we will. 我們按理應當在明天去看看住院的母親的，但我認為我們不會去。PracticeWho do sth.Students guard peoples safety. Policemen ought to look after old people. should Young people work hard.Workers study hard . They should.He ought toWe shouldnt. in some places.Homew