unit 7 lesson 2 词语用法

Lesson 2词语用法

“污染” pollute　　

[寓词于境]　　

       阅读下列句子，注意pollute的用法。　　

I feel it is our duty not to pollute our environment. 　　

A lot of rivers have been polluted.　　

[用法归纳] pollute vt. 弄脏，污染　　

[拓展]　　

pollution  n. [U] 污染（物）　　

polluter  n. 污染源；污染者　　

[即学即练] 将下列句子翻译成英语。　　

1. 骑自行车是很好的运动；而且还不污染空气。　　

2. 那些人正在清除海滩上所有的污染物。　　

Key:　　

1. Riding bikes is good exercise; moreover, it does not pollute the air.　　

2. The men were clearing all the pollution off the beach.　　

“禁止” ban　　

[寓词于境] 　　

       阅读下列句子， 注意ban的不同意思和词性。　　

　　Canada　　 will ban smoking in all offices later this year. 　　

Swimming is banned in this river.　　

The general also ended a ban on political parties.　　

[用法归纳] ban vt. 禁止，取缔; n. 禁止，禁令　　

[拓展]　　

ban sb. from doing sth. 禁止某人做某事　　

[温馨提示] ban的分词形式要双写n。　　

[即学即练] 将下列短语翻译成中文。　　

1. ban drugs         2. a parking ban    3. a total ban on nuclear arms　　

Key:　　

1. 禁止吸毒              2. 禁止停车     3. 核武器的全面禁止　　

“上演” present　　

[寓词于境]　　

       阅读下列句子，注意present的不同意思和词性。　　

They presented 15 lively songs and dances. 　　

The experts will present their findings at the yearly meeting of the Radiological Society.　　

May I present a suggestion?  　　

Allow me to present Mr. Brown to you.　　

Every member of the club was present.　　

I’m going to buy Mother a present for her birthday.　　

He is at present away on his holidays.　　

[用法归纳]　　

present  vt. 上演，演出；讲演，演示；提出； 正式介绍　　

        adj. 在场的；出席的　　

        n. 礼物，赠品； 现在，目前　　

[拓展] at present 目前；for the present暂时　　

[温馨提示] 　　

present作定语时要后置。如：　　

Those present were all Chinese.　　

[即学即练] 将下列句子翻译成英语。　　

1. 最后，她的思路转到了现在。　　

2. 全家人都已经到场了。　　

3. 我们向委员会提交了三个方案供讨论。　　

Key:　　

1. Finally, her thoughts switched to the present.　　

2. The whole family has been present.　　

3. We presented three plans to the committee for discussion.