新人教版九年级全一册英语 Unit13 第3课时 教学课件

1、Unit 13 We are trying to save the earth.Section A Grammar Focus-4c 学习目标1.掌握重点生词、短语、句子。生词：cruel, industry, law, scientific, reusable短语：be harmful to, take part in, afford to do sth.,turn off, pay for, at the top of, take action句子：1. Were trying to save the earth! 2. But it used to be so clean! 2. 熟练运

2、用现在进行时、used to do结构、被动语态以 及现在完成时。 3. 树立保护鲨鱼、尊重自然的意识。新课导入How many tenses(时态) and voices（语态） have we learned? What are they?新课讲解Read the following sentences. Were trying to save the earth.The river used to be so clean.The air is badly polluted.No scientific studies have shown that shark fins are good

3、for health.We should help save the sharks. Grammar Focus新课讲解一、现在进行时表示现在正在进行的动作, 也表示现阶段或当前一段时间内正在进行的动作。am/is/are + 动词-ing look, listen, now用法：结构：标志词：Look! The children are playing basketball on the playground.看！孩子们正在操场上打篮球。新课讲解助记现在进行时现在进行时，构成“am/is/are+动词-ing”要牢记。look, listen是标志，now也是常见词。若问be用何形式，须看主

4、语人称、数。一般问句be提前，否定be后not立。新课讲解二、used to do sth.与be used to doing sth.used to do sth. 表示过去常常做某事, 而现在往往不做了。be used to doing sth. 表示习惯于做某事。I used to get up at eight oclock.我过去常常8点起床。Joe is used to drinking a cup of milk for breakfast.乔习惯于早饭喝杯牛奶。 新课讲解Fill in the blanks with the appropriate modal verbs fr

5、om the box.can would could have to should must may/ mightPeople _ think that big things _be done to save the earth. Many forget that saving theearth begins with small things. may/mightmust/ have to4b新课讲解For example, you _ save electricity by turning off the lights when you leave a room. You _ also u

6、se reusable bags instead of plastic bags. can would could have to should must may/ mightcan/ could/ shouldcould/ can/ should关闭可重复使用的新课讲解I think its a great idea that you now _ pay for plastic bags in some stores. And instead of driving to school or work, you _ ride your bike or walk. If its far, you

7、 _ take the bus. can would could have to should must may/ mighthave to can/should/ couldcan/could支付新课讲解All these small things _ add up and become big things that _ improvethe environment. Lets take action now!can would could have to should must may/ mightcan/ couldwould/can/ could新课讲解use public tran

8、sportation turn off the lights when you leave a room; use reusable bags instead of plastic bags; ride bikes or walk to school or work;recycle books and paperMake a list of things that people can do to help the environment and discuss your list with your partner.交通运输4c新课讲解I think that everyone should

9、 use public transportation.I disagree. Its difficult for parents with young children to use public transportation新课讲解My friend Ken is thinking about making a poster about shark protection. Please help him. You can work in groups. 当堂小练一、用括号内所给动词的适当形式填空1. You mustnt _ (play) with the knife, or you may

10、 _ (hurt) yourself.2. Today, smartphones are really helpful. They _ (use) everywhere.3. My aunt _ (work) as a nurse for 10 years. She is good with different patients.play hurt are used has worked当堂小练二、单项选择11. Shared bikes, which are environmentally friendly _ quite popular among big cities in Chin a since last April. A. became B. have become C. will become【解析】句意：自去年四月份以来，有利于环保的共享单车在中国的大城市相当受欢迎。根据时间状语“since过去的时间点”可知要用完成时态。故选B。B当堂小练12. How are you today?Oh, I _ as ill as I do now for a long time. 武汉A. didnt feel B. wasnt feelingC. dont feel D. havent felt18. Who was the book _?A. write B. wrot