Chapter Two Pollution Fighters

2)      老師與學生一起得出結論：trees are very useful and important. 老師接著問學生：what else do you know about trees? how long do trees live? 然后讓學生來做一個與樹有關的quiz。通過這個quiz讓學生知道 trees are pollution fighters.老師還可以充分利用教參中的notes來幫助學生進一步了解樹是如何與空氣污染、水污染和噪音污染作斗爭的。同時幫助學生解決部分reading中的生詞，如：chemical, produce, release, oxygen, nasty等等。step 2 while-reading（這是本課的重點部分）1)      第一遍閱讀文章，要求學生根據上下文的內容和線索猜測詞意。2)      第二遍通讀全文，理解文章意思，并完成ex. d (page 18)、ex. e (page 19)。提醒學生閱讀時注意閱讀方法的使用。比如，在做ex. d時，使用scanning即跳讀的方法尋找具體問題的答案。在做ex. e時，使用skimming即略讀的方法，注意文章中的主題句和關鍵句。3)      聽課文錄音。4)      重點詞匯及句式講解。

1. collect some facts for a class project on pollution

2. pollute (v.) / pollution (n.) / polluted (adj.) / pollutant (n.) 污染物

3. interview (vt.) doctor ray

4. be interested in = be keen on / be fond of / enjoy / like 喜歡，感興趣

5. show (great) interest in

6. interest (n./v.) / interesting (adj.) / interested (adj.)

7. the biggest and oldest living things on earth

8. live (v.) 生活，居住 e.g. where do you live?

(adj.) 活著，有生命 e.g. have you ever touched a real live snake?

     現場直播的 e.g. it wasn’t a recorded show, it was live.

 lively (adj.) 有生氣的，活潑的，充滿活力的 e.g. they are lively children.

 alive (adj.) 活的e.g. the young woman was still alive when the ambulance reached the hospital.

                   he kept the little cat alive by feeding it warm milk.

     充滿生機的 e.g. in the evening the town really comes alive.   (名詞后用alive)

 living (adj.) 活的 e.g. does he have any living relatives? (名詞前用living)

(n.) 生活 e.g. she makes a living by selling newspapers.

 life (n.) (個人的)生命 c  e.g. three lives were lost in the fire. 

doctors fought all night to save her life.

生活 u e.g. life can be hard for a single parent.

          that’s life, you can’t change it.

exercises: 1) my family __________ in new york ten years ago.2) is your grandfather ___________?3) what is the oldest ____________ things in the world?