(
课件网) passport clean… off chalk blackboard northern coast n. 护照 把……擦掉 n. 粉笔 n. 黑板 adj. 北方的；北部的 n. 海岸；海滨 Words and Expressions Read after the tape and speak out the Chinese immediately. Unit 10 . Grammer focus--4c season knock eastern take off worth manner n. 季；季节 v. 敲；敲击 n. 敲击声；敲击 adj. 东方的；东部的 脱下；起飞 adj. 值得；有……价值 n. 方式；方法； pl. 礼貌；礼节 Words and Expressions When were you supposed to arrive I was supposed to arrive at 7:00. Read and observe the colored words and sentences. Am I supposed to wear jeans No, you're expected to wear a suit and tie. What are you supposed to do when you meet someone for the first time You're supposed to shake hands . You're not supposed to kiss. be supposed to … 应该做；本应该做；被期望做……否定形式是：be not supposed to be expected to... 被期望做某事 be supposed to比be expected to的主观性更强。 当be supposed to do的主语是“人” 时，意为“应该……；被期望……”，它可以用来表示劝告、建议、义务、责任等。 车上的每个人都应该系安全带。 Everyone is supposed to wear a seat-belt in the car. Note 1 拓展 当be supposed to的主语是“物”时，它表示“本应；本该”，用于表示“某事本应该发生而没有发生”。 火车本应在半小时之前到达。 The train was supposed to arrive half an hour ago. Note 2 当be supposed to的主语是人时，后面还可以接“have + V-ed”，意为“本应，应该”，表示本应该做某事而没做。 你本应该现在已经到了北京了。 You are supposed to have arrived in Beijing now. Note 3 It’s very impolite to keep others waiting. Read and observe the red words. It’s normal to cry when we feel sad. It’s important to be on time. It’s+ adj. + to do sth. 形式主语 真正主语 不定式做主语时，常用代词it来代替不定式结构。 it为形式主语，而不定式作为真正主语被后置。 读书是有用的。 每天跑步是健康的。 迟到是糟糕的。 It is useful to read. It is healthy to run every day. It is bad to be late for school. Practice 1. It is difficult for him to finish the task within two hours. It is adj. for sb. to do 2. It is kind of you to help me. It is adj. of sb. to do of sb.的句型常用表示人物的性格，品德 for sb.的句型常用于表示事物的特征 拓展 1. It was stupid ____ me to talk in that way to my mother. 2. It is very important ___ us to master English. 3. It was impossible ____the little boy to carry such a heavy box. 4. It is smart ___ them to make good use of the Internet. Fill in the blanks with of or for. of for for of Practice 1. When you go abroad, it _____ bring your passport. 2. After class, students _____ clean the chalk off the blackboard. 3. If you visit the northern coast of Norway during the winter season, it _____ pack warm clothes. 4. If there are people in the meeting room, you _____ knock before entering. 5. In many eastern European countries, you _____ take off your gloves before shaking hands. is important to are expected to is important to are expected to/ are supposed to are expected to/ are supposed to Complete the sentences with phr ... ...
