人教版九年级全册Unit 13We're trying to save the earth! Lesson 3　Grammar Focus 导学案 （无答案）

Lesson 3　Grammar Focus
语法练习
We're trying to save the earth. 现在进行时
The river used to be so clean. used to
The air is badly polluted. 被动语态
No scientific studies have shown that shark fins are good for health. 现在完成时
We should help save the sharks. 情态动词
语法详解
一、现在进行时、现在完成时的用法
时态 用法 构成 时间状语
现在进行时 表示现在(说话时)或当前一段时间内正在进行的动作 be动词＋现在分词 now, at the moment, these days, look, listen等
现在完成时 1. 表示过去发生的动作或状态对现在造成影响 2. 表示过去开始的动作或状态持续到现在，并可能持续下去 have/has＋过去分词 since＋时间点， for＋时间段， already, yet, so far等
二、used to的用法
三、被动语态的用法
四、情态动词的用法
一、单项填空
( )1. —Peter has changed a lot, hasn't he
—Yes. He the guitar, but now he is more interested in reading history books.
A. use to play B. used to play
C. used to playing D. is used to play
( )2. David, do you know Su Yiming, a snowboarder from China
—Sure. He won the first place in the men's Big Air Event. He be hard－working.
A. needn't B. can't
C. should D. must
( )3. Would you like to see the movie Changjin Lake this evening
—Oh, it's a good movie. But I it already.
A. saw B. have seen
C. see D. will see
( )4. Sssh! Be quiet. I'm on the phone.
—Who you to, mom
A. do; speak B. are; speaking
C. will; speak D. have; spoken
( )5. I hear that you took part in a forest clean－up activity last Sunday.
—Yes, it by our school green club to protect forests.
A. organizes B. organized
C. was organized D. will be organized
二、小语篇选择
　　According to a new research, 97% of college students agree with low－carbon lifestyles(低碳生活方式). It is said that the top three choices among young Chinese are: not wasting food, cutting energy use and choosing 1 public transportation rather than cars.
　　“Low－carbon lifestyles will help protect the earth's environment. In recent days, living a green life 2 very popular among young Chinese，” said Li Zhuo, a college student. Li said 3 also joined an environmental club. He 4 to guide people in communities through waste sorting(垃圾分类) at weekends. “In China, we 5 see the ‘low－carbon’ slogan(标语) in many public places. So the idea of low－carbon lifestyles is familiar in the country，” Li said.
( )1. A. use　　　　　　 B. using　　　　　　C. to use
( )2. A. became B. has become C. will become
( )3. A. he B. his C. him
( )4. A. requires B. is required C. was required
( )5. A. must B. should C. can