7b Unit 5 Grammar教案
课题
7b unit 5 grammar
课型
新授课
教学目标1、学习can 与could在表示能力的使用2、学习can 与could 在表示可能性时的应用
重难点分析
教会学生如何理解运用区别can \could学情分析
学生已经掌握一些关于情态动词的用法，但如何正确区别一些情态动词，学生还是不太明确教学方法
情景教学法,归纳法教具准备
课件教学步骤
教师活动
学生活动
个性化补充
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)比较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)共2页，当前第1页127b Unit 5 Grammar教案
④millie had no money yesterday. it was not possible for her to buy that coat. (she couldn’t buy that coat.)2.show the sentences above on the screen and explain them to the students: we use “can” / “could” to say that something is / was possible to happen.3. get the students to explain with “possible”. ①fire can be dangerous if we are not careful.②mr. sun can’t be at home because i saw him at school just now.③i didn’t lose my key so i could get in.④mr. sun could not get out because he hurt his leg.利用一些学生熟悉的短语，以can为提问方式与学生进行问答用第三人称换第二人称进行对话练习write them down on the blackboard.write the sentences down on the blackboardask the students to compare the sentences with can and could.ask them to draw the conclusion.巡视，帮助可能有困难的学生check the answercan和could分别表示现在和过去的能力我们在上册书中还学过表示征求意见的can, maywrite them down on the blackboardwrite them down on the blackboard也可以用学生的课堂状况作为语境show the sentences above on the screen use “can” to ask小组内分组练习ask the partner more questions like above and write down their answers , then report to the class.answer让学生在组内写出更多的类似的句子总结can 与could的区别report themselves talk about the tables freely. in pairs.理解举例说明 answer these sentences and make more 完成单选练习guess 总结作业设计补充习题同步导学
板书设计he can’t / cannot swim.…she could ride a bike five years ago.he couldn’t swim five years ago.can 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?he can pass the examwe can’t play football after class.the children could go to the parkshe couldn’t buy that coat.共2页，当前第2页12