英语选修7北师大版 unit20 lesson2 教案

1、Unit 20 New FrontiersLesson 2 Artificial IntelligenceTeaching aims1.words and phrases：2. grammar: The Future3. listening: to practise listening strategies for completing notes.Teaching time Two periods(两课时连堂)Teaching processStep 1 RevisionReview the new words of last lessonStep 2 Grammar: the future

2、 1.review Future Tense(复习一般将来时) 构成:助动词shall或will+动词原形构成.第一人称用shall或will,其它人称用will.E.g.: He will be back in a few days. Shall I go with you?2.Future perfect(将来完成时) 构成:shall/will have+动词的过去分词 用法: 表示动作或状态延续到将来某一时间.常用延续性动词,并有一个表示将来某一时间的状语或状语从句.E.g.: He will have been in the army for 10 years by next Jun

3、e. We shall have walked a long way before we reach the village. 表示动作或状态在将来某一时间以前已经结束,但其影响却延续到那一时间.E.g.: I shall have finished my homework by ten oclock. When the old man comes next week, his son will have left for Shanghai.3.Future continuous(将来进行时) 构成:shall/will be+现在分词 用法: 表示在将来某一时刻或某一段时间正在进行的动作,常

4、常带有时间状语短语或时间状语从句.E.g.: I will be busy this evening. I will be writing an article. 表示按计划将来要发生的动作.E.g.: I hope you will be coming on time. They will be having their holiday in June.4. do exercise 8 in page 21 and exercises in page 66Step 3 learn the new words of lesson 21. ask some students to read th

5、e new words first and correct their pronunciation2. play the tape and have them read after the tape3.give them a few minutes to read the new words freely ,tell them if they cant read the words, encourage them to ask the teacher .Step 4 listening1. Before you start a) make sure the students know the

6、phrases meanings. And give them a few minutes to discuss the questions in exercise 1. b) check their answers. c) have a discussion about the photos.2. listen to learna) ask the students look at exercise 2, and then play the cassette twice.b) give them a few minutes to answer the questions.3. Exercise 3.a) let the students read the expressions in exercise 3 and the Function File.b) give them some time to complete the exerc