《大学英语21世纪读写教程》课程教学资源（PPT课件）教材1-3册a篇课文 Unit 9 Petihosee Eanthe

Unt9:%E影 1. Pre-Reading Activities 2 Intensive Stud 3. Quiz 4.Keys

Unit 9: Hothouse Earth 1. Pre-Reading Activities 2. Intensive Study 3. Quiz 4. Keys

Pre-reading Activities Warming-up Activities 1. Looking at the title, what do you guess the passage is about? Make predictions, and then read the first paragraph to find out what the“ greenhouse effect”is

Pre-reading Activities: Warming-up Activities 1. Looking at the title, what do you guess the passage is about? Make predictions, and then read the first paragraph to find out what the “greenhouse effect” is

2. In the discussion of the"green- house effect what do scientists disagree about? And, what points do they agree on? Skim paragraphs 3 and 4 to look for your answers

2. In the discussion of the “green￾house effect”, what do scientists disagree about? And, what points do they agree on? Skim paragraphs 3 and 4 to look for your answers

3. How serious of a threat do you consider the"“ greenhouse effect”to be? Give reasons for your answer

3. How serious of a threat do you consider the “greenhouse effect” to be? Give reasons for your answer

Intensive Study 1。 Difficult sentences 2. Key words, phrases usages 3. Comprehension exercises

Intensive Study 1. Difficult sentences 2. Key words, phrases & usages 3. Comprehension exercises

1. warn of /against- give a warning about eg,计算机专家让用户们提防黑客的来访。 The computer expert warned the users against the visits from hackers 2. result from- be the result of, happen because of eg.两国之间的争论最终导致为一场血腥的战争。 The quarrel between the two nations resulted in a bloody war

1. warn of / against — give a warning about e.g. 计算机专家让用户们提防黑客的来访。 The computer expert warned the users against the visits from hackers. 2. result from — be the result of, happen because of e.g. 两国之间的争论最终导致为一场血腥的战争。 The quarrel between the two nations resulted in a bloody war

3. rise vi-(rose, risen, rising) to go, come up or higher, reach a higher level or position, to get up from a lying, sitting, or kneeling position e.g. The horse rose on its hind legs. The smoke from our fire rose straight up in the still air 4. raise v,-(raised, raised, raising) to lift up, to cause to rise, to bring up for discussion or atten- tion, to breed or bring up e.g. The police raised a sunken ship to the surface of the sea Tom's mother has raised five children by herself

3. rise vi. — (rose, risen, rising) to go, come up or higher; reach a higher level or position; to get up from a lying, sitting, or kneeling position. e.g. The horse rose on its hind legs. The smoke from our fire rose straight up in the still air. 4. raise v. — (raised, raised, raising) to lift up; to cause to rise; to bring up for discussion or atten￾tion; to breed or bring up. e.g. The police raised a sunken ship to the surface of the sea. Tom’s mother has raised five children by herself

5. arise vi-(arose, arisen, arising) come into existence, come to notice, present itself e.g. Could you work on Saturday, should the need arise? Many problems arose when computers were firstly used in banking 6. dry up make or become completely dry e.g. The river was dried up by the unusually strong sunlight

5. arise vi. — (arose, arisen, arising) come into existence; come to notice; present itself. e.g. Could you work on Saturday, should the need arise? Many problems arose when computers were firstly used in banking. 6. dry up — make or become completely dry e.g. The river was dried up by the unusually strong sunlight

Wore phrases with up beat up毒打 break up 结束,终止 bring up养育,提出 brush up温习 call up打电话 choke up说不出话 clear up清理,澄清 draw up草拟 dress up盛装 wash up洗餐具 eat up 吃 hang up 挂断电话 heat up变暖,变热 hold up阻止,防碍 show up出现 take up 从事

More phrases with “up” beat up 毒打 break up 结束，终止 bring up 养育, 提出 brush up 温习 call up 打电话 choke up 说不出话 clear up 清理，澄清 draw up 草拟 dress up 盛装 wash up 洗餐具 eat up 吃完 hang up 挂断电话 heat up 变暖，变热 hold up 阻止，防碍 show up 出现 take up 从事

7. the more.. the more used to show that the increase in one amount or degree of something continues at the same rate as another e.g. Advice is like snow, the softer it falls, the longer it dwells up(E W)the mind and the deeper it sinks into the mind Key:忠告像雪花一样:来得越和缓,留在心里越长久, 沁人心睥也越深。 8. shut in to keep, enclose eg.我们处在群山环抱之中 Key: We are shut in by the hills here

7. the more … the more … — used to show that the increase in one amount or degree of something continues at the same rate as another e.g. Advice is like snow; the softer it falls, the longer it dwells up (驻留) the mind and the deeper it sinks into the mind. Key: 忠告像雪花一样：来得越和缓，留在心里越长久， 沁人心睥也越深。 8. shut in — to keep, enclose e.g. 我们处在群山环抱之中。 Key: We are shut in by the hills here