7b Unit 5 Grammar教案

課題

7b unit 5 grammar

課型

新授課

教學目標1、學習can 與could在表示能力的使用2、學習can 與could 在表示可能性時的應用

重難點分析

教會學生如何理解運用區別can \could

學情分析

學生已經掌握一些關于情態動詞的用法，但如何正確區別一些情態動詞，學生還是不太明確

教學方法

情景教學法,歸納法

教具準備

課件

教學步驟

教師活動

學生活動

個性化補充

step 1. warming up.1) make a survey.“what can you do now?”ask:can you ride a bike / swim / fly a kite / play football / play chess?yes , i can. / no, i can’t.2)show the students the following phrases on the screen.ride a bike  swim  fly a kite  play football  play chess  3)ask the other students in the class.can she / he …?4)show the students the sample on the screeneg: a. can he ride a bike?no,he can’t / yes, canstep 2. presentation.1) ask student again:could you ride a bike five years ago ?(help them answer:yes, i could./ no, i couldn’t.)2) get the students to ask the teacher about the past of a and b.could he / she …? (yes, he / she could. / no, he / she couldn’t.)3) teach the students to say the whole sentences:she could ride a bike five years ago.he couldn’t swim five years ago.……5)  work out the rule.①  positive: can    could② negative: can’t   couldn’t③question: can …？  could …？step 3. practice.1) work alone.(part a1)2)get the students to report themselves like above.eg. can sandy row a boat now?   could he do it last year?3)complete the conversation of part a2.5) explain:we can use  am (is , are) able to replace can and  was (were) able to replace could.eg.①mike can sing more than 20 english songs.    mike is able to …②she could speak english when she was four.she was able to…step 4.ask 1)      ask studentcan i borrow your pen ?can i open the window ?can i close the door?……could i borrow your pen ?could i open the window ?could i close the door?……2)比較can,may,could   表示可能性的用法step 5. guessing a riddle.it can live in water. it can breathe under water. it can swim. it can live in a glass bowl. people can feed and watch them every day. what is it?     (a goldfish)step 6. presentation.1.say:①zhang hua works hard. it is possible for him to pass the exam.(he can pass the exam)② nick didn’t bring a football to school.it is not possible for us to play football after class.(we can’t play football after class.)③it was sunny last sunday. it was possible for the children to go to the park.(the children could go to the park)