人教版九年级Unit 13 We're trying to save the earth!知识点教案

1、.【2019年秋季课程】九年级Unit 13 We're trying to save the earth!适用学科初中英语适用年级初中三年级适用区域人教版新目的课时2课时知识点动词辨析，动词词组辨析，名词辨析，介词辨析，形容词辨析教学目的知识与技能：动词辨析，动词词组辨析，名词辨析，介词辨析，形容词辨析过程与方法：对变化规那么所需要的条件进展判断，可以做到游刃有余，运用灵敏自如。情感态度价值观：激发对英语学习的热情，增强信心。教学重点动词辨析，动词词组辨析，名词辨析，介词辨析，形容词辨析教学难点议论污染和环境保护教学过程一、课堂导入通过What are you doing to?这一

2、句型来询问学生如何保护环境或让学生之间互相询问，复习本节课所需句型。二、复习预习1. A good beginning makes _ good ending.A. aB. anC. theD. /【答案】A【解析】此题考察冠词的用法。表示类别用a，故答案为A。2. What _ news it is! Nobody _ it.A. a surprising; believesB. surprising; believesC. a surprised; believeD. surprised; believe【答案】B【解析】news是不可数名词，排除A和C；修饰事物用surprising，排

3、除D ，故答案为B。3. There are no words to describe _ I miss my hometown.A. how muchB. how manyC. how soonD. how long【答案】 A【解析】此题考察副词辨析。句意：没词描绘我多么思念我的家乡。结合句意可知答案为A。4. -Why are you so tired these days?-Well, I have _ homework to do.A. too muchB. too manyC. much tooD. many too【答案】A【解析】此题需要“太多，排除C和D；homework不可

4、数，故答案为A。5. I couldnt do it _ your great help. Thanks a lot!A. withB. withoutC. forD. to【答案】B【解析】此题考察介词的用法。句意：没有你的帮助，我无法做这件事。结合句意可知答案为B。6. I cant afford _ a big house now.A. buyB. to buyC. buyingD. buys【答案】 B【解析】此题考察非谓语动词的用法。“不能负担得起做某事用cant afford to do sth.，故答案为B。三、知识讲解知识点1： litter1 可用作动词或名词，意为“乱扔；垃

5、圾。如：Dont litter up your room.2 litter表示废弃物尤其指在公共声所乱扔的废纸、垫草时是不可数名词，其它情况是可数名词。如：The streets were full of litter.知识点2: bottom1 名词，意为“底部；最下部。如：He was always bottom of the class in math.2 动词或形容词，意为“底部的。如：Put your books on the bottom shelf.知识点3： afford1 动词，意为“承担得起；买得起。如：I cant afford this car.2 常构成短语：affo

6、rd to do sth. 意为“负担得起做某事。如：I cant afford to buy this car.知识点4：take part in1 意为“参加，参与活动。如：Take part in something you believe in. 2 join多指参加组织，成为其中的一个成员。take part in指参加活动。如：I will never forget the day when I joined the Party.知识点5：realize意为“理解；意识到；实现。不用于进展时。如：Do you realize that all of these shirts are

7、 half off?知识点6：without是介词，意为“没有，后面接名词或动名词。如：Without the sun, nothing would grow.知识点7：recycle可用作动词，也可用作名词，意为“回收利用；再利用。如：We should try to recycle all our waste paper.知识点8: inspiration名词，意为“灵感；鼓舞人心的人或事物。如：Many artists have drawn their inspiration from nature.知识点9： creativity1 名词，“创造力；独创性。如：A good teach

8、er can encourage our creativity.2 形容词形式是creative，意为“创造性的，有创造力的。如：Express your creative side.知识点10：辨析gate与door1 这两个词都有“门的意思。2 gate指大门口。3 door指屋子、衣柜等的“门或“门口。如：He is waiting for you at the park gate. Close the door when you go out.知识点11：throw away意为“扔掉；抛弃，假如代词做宾语，要放在两词中间。如：Thats rubbish you can throw i

9、t away.知识点12：辨析pull down与bring down1 pull down意为“拉下，拆毁。2 bring down意为“拿下；带下；搬下。如：He tried to pull down the zipper拉链 normally. Hell need help to bring the computer down.知识点13：put sth. to good use意为“好好利用。如：The waste water was put to good use.四、例题精析【例题1】【题干】-Why are you so tired these days? -Well, I ha

10、ve _ homework to do.A. too muchB. too manyC. much tooD. many too【答案】A【解析】此题需要“太多，排除C和D；homework不可数，故答案为A。【例题2】【题干】I couldnt do it _ your great help. Thanks a lot!A. withB. withoutC. forD. to【答案】B【解析】此题考察介词的用法。句意：没有你的帮助，我无法做这件事。结合句意可知答案为B。【例题3】【题干】I cant afford _ a big house now.A. buyB. to buyC. buy

11、ingD. buys【答案】 B【解析】此题考察非谓语动词的用法。“不能负担得起做某事用cant afford to do sth.，故答案为B。【例题4】【题干】The boy is sleeping. Please _ the radio.A. turn upB. turn downC. turn onD. turn off【答案】B【解析】此题需要“调小，故答案为B。【例题5】【题干】It usually _ Mum about half an hour to cook.A. paysB. takesC. spendsD. costs【答案】B【解析】此题考察It takes sb. st. to do sth.，故答案为B。【例题6】【题干】I hope everyone can care about _ the environment and stop _ things.A. pr