人教版九年级全册Unit 7 Teenagers should be allowed to choose their own clothes-语法焦点与同步作文指导课件(共9张PPT)

(共9张PPT)
语法焦点
与同步作文指导
1.含情态动词should的被动语态结构式：
　　　should + be+及物动词的过去分词。
　(1)肯定句结构为：主语+should be+及物动词的过去分词+ (by+宾语）.
　　eg: 你应该自己完成作业。
　　　Your homework should be finished by yourself.
　(2)否定结构为：主语+ should + not+ be +及物动词的过去分词+ (by+宾语).　　
　　eg：不应该允许青少年晚上外出。
　　Teenagers should not be allowed to go out at night.
语法焦点
含情态动词should的被动语态
1.含情态动词should的被动语态结构式：
　(3)一般疑问句结构为:Should +主语+ be+及物动词的过去分词+ (by+宾语)？
　回答:Yes，主语+should./No，主语 + shouldn’t.
　　eg:这些小树应该每天浇水吗？
　　Should these young trees be watered every day
　　Yes, they should. /No, they shouldn’t.
　　对，应该。/不，不应该。
　(4)特殊疑问句结构为:疑问词+一般疑问句？　　
　　eg：应该允许学生们做什么？
　　　What should students be allowed to do
语法焦点
含情态动词should的被动语态
1. Nobody can answer the question.(同义句改写）
→ The question ＿＿＿＿answered by anybody.
2. We should clean our teeth twice a day.(改为被动语态）
→ Our teeth should ＿＿＿＿＿twice a day.
3. They should be allowed to take part in after-school activities.(变一般疑问句并作否定回答）
→ ＿＿＿＿they ＿＿＿＿＿＿＿take part in after school activities
　No, they＿＿＿＿＿.
一、按要求进行句型转换，每空一词。
can’t be
强化训练
be cleaned
Should
be allowed to
shouldn’t
4. You can’t lend the magazine to others.(改为被动语态）
→ The book＿＿＿＿＿＿to others.
5. The lights should be turned off before you leave the classroom.(改为主动语态）
→ You ＿＿＿＿＿＿off the lights before you leave the classroom.
一、按要求进行句型转换，每空一词。
can’t be lent
强化训练
should turn
写作指导
　　本单元写作针对某人、某事或某活动制定规则或提建议。写此类短文时，最重要的是掌握情态动词的用法以及相关句型。再根据所给的提示、要求等，明确中心内容，就能写出一篇好文章来。
　　常用句型归纳如下：
1.We must/can…;
2.We mustn’t/can’t…;
3.We should/shouldn’t…;
4.We should/shouldn’t be allowed to…;
5.You’d better…;
6.Why not….
写作示例
　　假设你叫大明，你的一个美国笔友托尼将到中国来并在你们班学习。请写信告诉他你们班的班规，80词左右。
经典示范
Dear Tony，
　　I am glad to know that you will come to our class. You asked me about the rules here. Let me tell you some.
We start class at 8 o’clock in the morning. You should be in the classroom before that. When the class begins，you should sit silently on your seat. You mustn’t speak to anyone else when the teacher is giving the lesson. If you want to answer the teacher’s question, put your hands up first. When the teacher calls your name, you can stand up and answer it. If the teacher gives you some homework to do, you ought to finish it on time. I hope you will do well in all the lessons here.
Yours,
Daming