Unit 4 Environment Unit 4 Text A Teaching

Unit 4 Environment

Unit 4 : Text A Teaching Contents 1 Daily report 2 Review 3 Lead - in 4 Words study 5 Text study

Daily Report

Review How to cut down pollution and save energies? Use reusable bags instead of plastic bags when shopping. Take the bus , subway or ride a bike instead of driving. Recycle some useful rubblish. plant more trees and flowers. When printing files, I use both sides of the paper. use energy-saving light bulbs. turn off the lights when leaving the room. take part in environmental projects. . .

Lead- in Can you think of some natural disasters (自然灾害) because of the extreme heat(酷暑 )?

drought(旱灾)

fire

Watch a video , answer the question: What are the negtive effects of global warming?

Melting iceberg causes the sea level to rise.

disappearance of species

Severe storms floods hurricanes the spread of diseases

words study P 63

critical: 临界的，关键的，挑剔的， 1. Whether this phenomenon is good or bad, there is no clear critical point to judge. 2. This was a critical moment in his career. 3. She became critical and dogmatic.

desert n. ['dezət] 沙漠；荒原 v. [dɪ'zɜːt] 遗弃；舍弃 1. He was lost in the Sahara Desert. 2. Mrs. Roding's husband deserted her years ago. 3. She led them into a deserted sidestreet.

disappear vi. 消失；失踪 1. The black car drove away from them and disappeared. 2. … A Japanese woman who disappeared thirteen years ago. 以dis为前缀，表示“不，消失掉”的单词有dislike, dishonest disproof 反证, discourage 使失去勇气, disarm 解除武装 discover 发现, dismay 沮丧 may 能够, disorder 无秩序的

melt vi. 融化；溶解 1. That is why heat can melt ice, vaporise water and cause bodies to expand. 2. Their tears can melt your heart.

Text study P 64 √ √ √ √

Difficult sentences 1. Today, we owe them a big thank you as we come out of human history’s greatest crisis. owe sb sth e. g. 欠某人某事或某物 (1) He asked for help from a coworker who owed him a favour. (2) Perhaps we owe these people more respect. (1) 他向一个欠他人情的同事求助。 (2)也许我们应该给予这些人更多的尊敬。

come out of a crisis: 摆脱危机 e. g. (1) Bank of Cyprus has come out of the crisis and is expanding. (2) China is to come out of a crisis strong, analysts say. (1)塞浦路斯银行摆脱了危机，并开始扩张 (2)分析家们指出，中国即将强势摆脱危机。

P 66 unimportant be born quickly freeze few dry easy get smaller different from fall cool unfortunate

melting critical dryer cool like easy rising freezing

P 67 fossil fuel global CO 2 emission alternative vehicles government

Bye