Chapter 2 Pollution Fighters
19.one and a half hectares of trees 一公頃半的樹林
20.produce enough oxygen 產生足夠的氧氣
21.keep… alive 使......存活
22.as well as 也,同樣
23.for example 例如
24.warn sb (not) to do sth 告戒某人(不要)做某事
25.warn sb. of sth. 預告/ 預先通知某人某事
26.protect oneself by doing sth. 通過......保護自己
27.produce a chemical 產生一種化學物質
28.make… do sth. 使某人做某事
29.taste nasty 嘗起來令人作嘔的
30.join… together 把......連在一起
31.pass … around 傳遞......
32.communicate with sb. 和......交流/ 交際
33.one another = each other 互相
34.in danger 處于危險中
35.hardly any = almost no 幾乎沒有
36.our best fighters against pollution 我們最好的反污染衛士
sentence patterns
1. trees cool the air as well as clean it.
2. they make streets more beautiful and less noisy.
3. trees are communicating with one another.
三 language points :
1.on earth = in the world 在世界上
on the earth 在地球上
2. living a. alive now 有生命的 作定語