九年级上册英语Unit13 知识点归纳整理

九年级英语Unit13 We’re trying to save the earth

短语归纳

1. at the bottom of the river 在河床底部

2. be full of the rubbish 充满了垃圾

3. throw into把…扔入

4. play a part in doing sth 尽一份力做…

5. land pollution 土地污染

6. fill …with …使…充满…

7. cut down air pollution 减少空气污染8. make a difference 产生影响

9. take action 采取行动10. turn off 关掉

11. pay for 付费12. add up 累加13. public transportation公共交通

14. turn off 关掉14.be harmful to 对…有害15.the food chain食物链

16.take part in参加17.pay for付费、付出代价

18.take action 采取行动19.throw away 扔掉、抛弃

20.put sth to good use 好好利用…21. Pull…down 拆下、摧毁

22.bring back恢复、使想起，归还23.at the top of 在…顶部

词性转化

1. adventage反义词disadvantage

2.wood----wooden adj.

3.harm—harmful adj.

4.science—scientist/scientific

e—used/useful/reuse/reusable

6.inspire—inspiration

7.create—creative—creativity 8.danger—dangerous/endangered

9. pollute—pollution/polluted

知识拓展

1. try. 试图，努力，尝试用法: try to do sth.尽力做某事try doing sth. 尝试做某事try one's best (to do sth.)=do one's best (to do sth.) 尽某人最大的努力(做某事) 短语:try on试穿try out试用，参加选拔have a try尝试，试一下let me try让我试-下

2.the earth地球，表示世界上独-无二的事物前面要加定冠词the. 短语: on the earth在地球上on earth究竟，到底

3. the bottom of... .. 的底部the top of .....的顶部

4. be full of = be filled with充满. ...

5.cut短语cut down减少，把..... 砍倒cut in插话cut off切断;断绝cut up切碎cut out删除

6. instead of介词短语，后跟名词、代词或动词ing形式。instead副词，常位于句末。

7. hear of/about听说hear from 收到某人来信hear听到(强调结果)listen to听(强调动作)

8. percent n. 百分之...单复数相同。the percent of名词做主语时，谓语动词要和of后的名词保持一致9. afford v. “承担得起;买得起”。后面可跟名词、代词或动词不定式作宾语。常与can, could, be able to连用，多用于否定句中。afford to do sth.负担得起做某事can't afford to do sth.不能负担做某事10. take action采取行动take action to do sth.采取行动做某事11. reusable adj.可重复使用的，可再次使用的类似加前缀re的单词:retun返回reappear 再现rebirth再生rebuild在建recall 回想rewrite 重写recover恢复recount重新计算rethink 重新思考recycle 重新利用12. be made of...由.....制成，能看出原材料be made from ........制成，不能看出原材料be made in在...生产后接生产地be made into ...被制成..后接制成品.be made by...被...造，后接动作的执行者