unit 13 we’re trying to s**e the earth!
period 1 section a （1a—2c)
语言目标 1 学习掌握词汇。
litter,bottom,fisherman,coal,ugly,2 句子we’re trying to s**e the earth.
people are throwing litter into the river.
the river used to be so clean.
everyone should help to clean up the river.
3重点难点 ：复习巩固现在进行时态， 情态动词被动语态。
学习过程。预习。
汉译英。尽力拯救地球2 噪音污染。
空气污染4水污染。
5河底充满垃圾6向河里扔垃圾。
7往河里倒废物8让他们关闭工厂。
9帮助清理河流10变成。
11在---起作用；参与；在---扮演角。
合作**。to do 尽力做某事。
we’re trying to s**e the earth.
try one’s best to do 尽某人最大努力做某事。
n. 垃圾（不可数）相当于rubbish v. 乱扔。
people are throwing litter into the river.
don’t __on the floor with books.
n. 污染 pollute v.
there___a lot of pollution in our city.
the poisonous smokethe fresh air .
反义词top at the bottom of 在---底部。
渔民 fishermen复数 ， 类似policeman,englishman
a part in 参与。
luck played a part in his success.
在他的成就中幸运起了一部分作用。
7.情态动词被动语态：情态动词+be+动词过分。
eg. the car mustn’t be parked here.
用其他情态动词造句（被动语态）
to be过去常常---
the river used to be so clean.
up 清理；打扫， 代词做宾语时只能放在clean up 中间。
everyone should help to clean up the river.
everyone should help to clean it up.
巩固练习。1）根据句意，从方框内选择合适的动词，并用其适当形式填空。
you smoke? how do you feel about __
2. people don’t like to be kept
3. the pie can behot or cold.
4. they had funfootball in the park last sunday.
5. —what made you so upset? —i___my new bicycle.
2）选择题。
1 、in order to make our city more beautiful, more trees and flowers___every year.
a will plant b should plant c should be planted
2、class being . please stop __
a talking b to talk c talk d talked
3、the coat isn’t expensive. i can afford it
a sell b borrow c lend d buy
4、the book is goodi___my brother likes reading it.
a not only; but also b neither; nor c both; and d either; or
5books in our school library is about 20000. and___books are good for us to read.
a a number of; the number of b the number of; a number of
c a number of; a number of d the number of; the number of
3）用所给词的适当形式填空。
1、we must keeppractice) the piano. the music festival is coming.
2、he triedwork) hard to s**e more money.
4）按要求完成句子。
1、we should s**e the sharks.(改为被动语态)
the sharkss**ed by us.
2、the river used to be so clean. (改为一般疑问句)
___the riverbe so clean?
3、i h**e ever taken part in an environmental project. (改为一般疑问句)
___you everan environmental project?
4、i take the bus to work.(改为同义句)
i __to work
5、we are trying to s**e the earth.(对划线部分提问)
___are you trying to __
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