七年级下册Unit4 Unit 4 Don’t eat in class. SectionA（3a-3c）课件

课件27张PPT。初中英语人教版七年级下SectionA（3a-3c）Unit4 Don’t eat in class.Warm-up1Presentation2Language PointsExercise34Do you know the rules in these places?Warm-upLook and sayhospitalmeeting roomgas stationLook at the two girls. What are the differences between the two expressions?PresentationI’m tired. I want to have a sit.
Can I sit here?
Yes, you can.I don’t like school, but the rules let all of us go to school.
So I have to go to school.Write the rules for the school library. Library Rules
1. __________________________________
2. __________________________________
3. __________________________________
4. __________________________________Don’t talk.Don’t eat in the library.Don’t listen to music in the library.Don’t take pictures/photos in the library.Use the words to make questions about the rules. Then write answers according to your school.Be quiet?
Q: ___________________________________ (she/have to/ in the library)?
A: ___________________________________
Eat?
Q: ___________________________________
(he/have to/in the dining hall)?
A: ___________________________________Does she have to be quiet in the library?Yes, she does.Does he have to eat in the dining hall?Yes, he does.Listen to music?
Q: ___________________________________ (we/can/ in the hallways)?
A: ___________________________________
Wear a hat?
Q: ___________________________________
(we/can/in the classroom)?
A: ___________________________________Can we wear a hat in the classroom?No, we can’t.Can we listen to music in the hallways?No, we can’t.Make up five cool rules for your dream school. Share your rules with the class. Your classmates vote for the Coolest School!We can walk out of the class anytime we want.
We can wear what we want.
We may have less homework and more free time.
…祈使句是表示请求、命令、叮嘱、号召、劝告
等的句子; 通常省略主语you; 句中谓语动词用动词
原形; 句尾一般用降调; 祈使句的开头是动词原形。
祈使句有肯定和否定两种：
e.g. Look?out!? 小心！
Wait?here?for?me!? 在这等我！ GrammarLanguage points Come in, please! 请进！
　 Sit down, please. 请坐。
　 Let's go home. 我们回家吧。
否定的祈使句是在动词前(即句首)加Don't.
e.g. Don't talk in class! 不要在课常上讲话！
Don't open the window! 别开窗！
Don’t be late for school. 上学别迟到 !
Don’t smoking! 别吸烟!2. 情态动词have?to?的用法have to意思是“必须、不得不”, 它侧重于客观
上的必要和外界的权威。
1) 结构: 主语＋have?to＋动词原形＋其他
(一般现在时, 主语是第三人称单数时,
用has?to; 句子是过去时, 用had?to.) 如：We?have?to?wear?sneakers?for?gym?class.?
在体育课上, 我们必须穿运动鞋。
Tom?has?to?practice?the?guitar?every?day.?
汤姆每天必须练习弹吉它。
I?had?to?get?up?at?5:00?am?last?Monday.?
上周一, 我不得不早上5点起床。
2) 否定形式: 主语＋don’t?have?to＋动词原形
＋其他(一般现在时, 主语是第三人称单数时,
用doesn’t?have?to; 句子是过去时, 用didn't?have?to)
e.g. Nick?doesn't?have?to?wear?a?uniform.
? 尼克不必穿制服。
We?didn't?have?to?do?our?homework?at?once.?
我们不必马上完成作业。3) 疑问句: Do (Does 或 Did)＋主语＋have?to?＋
动词原形＋其他
如: --Do?you?have?to?stay?at?home?on?weekends??
--Yes,?I?do.?/?No,?I?don't.?
周末你必须呆在家里吗？
是的, 我必须。/ 不, 我不必。
Did?he?have?to?go?to?bed?by?11:00?last?night??
昨晚, 他不得不11点前上床睡觉吗？?1) 表示能力, “会”, “能”(在第一册中已经学习
这种用法) 例如:
Can?you?play?the?guitar??你会弹吉它吗？
Judy?can?speak?a?little?Chinese.?
朱蒂会说一点中文。
I?can?dance?and?sing.?我能唱歌又能跳舞。3. 情态动词can的用法2) 表示允许、许可, “可以”、“能” (在这一课
中新学的词义) 例如:
Can?the?students?run?in?the?hallways??
学生们可以在走廊上跑吗?
We?can?eat?outside.?我们可以在外面吃东西。
Can?I?come?in??我能进来吗?一、根据句意，用can和can’t填空。
1. Mr Green_______ smoke here because there’s a sign on the wall. It says “No smoking.”
2. It’s very hot outside. You______ wear a hat.
3. We _______ eat in the classroom because it’s impolite to teachers.
4. I ______ go to bed after 11:00 on school night.
5. The students _____ read books and magazines in the library.can’tcancan’tcancan’tExercise用have to或has to填空。
1.We ________ clean our classroom after school.
2.She _________ make her bed after getting up.
3.It’s late. Mr Beckman ______ go to work by car.
4.Emily and Peter join a music club. They _______ practice the guitar every day.have tohave to has tohas to1.Can we play football in the hallways?
2.Can we eat in the classroom?
3.Can we play basketball on the playground?No, we can’t.二、补全对话。No, we can’t.Yes, we can. 4. Can we listen to music in the music room??
5. Can we talk loudly in the classroom? Yes, we can. No, we can’t. Homework:Talk about your school day. What can you do and what do you have to do?
Then make a list.