内容正文:
Unit2 Topic2
Section A
1. as a result 结果
2. change into 变成,转换成
3. turn into 把......变成
4. stop/prevent sb./sth. (from) doing sth.
keep sb./sth. from doing sth.阻止某人/某物做某事
5. human beings 人类
6. cut down 砍倒,削减
7. cut off 切断,中断
8. a number of + 可数名词复数 + 谓语动词复数 “许多,大量”
9. the number of + 可数名词复数 + 谓语动词单数 “...的数量”
10. such ... that... 如此,以至于
11. come into being 形成,诞生
12. be in danger of…处于……的危险中
13. die out 灭绝
14. plenty of 大量的
15. come to understand 开始理解
16. do/try one’s best 尽某人最大努力
Section B
1. here and there 到处
2. wild animals 野生动物
3. something useful 一些有用的事
4. care for 照顾
5. waste paper 废纸
6. worst of all 最糟糕的是
7. make rules 制定规则
8. break the rules违反规则
9. obey/follow the rules 遵守规则
10. in the beginning= at first 期初,在一开始
Section C
1. during this period 在这期间
2. all over the world = around the world = the whole world 全世界
3. millions of 数以百万的
4. take away 带走,拿走,使消失
5. pass through 穿过
6. escape…from… 从……中逃脱
7. cause sb./sth.to do sth. 导致某人/某物做某事
8. The greenhouse effect 温室效应
9. refer to 提到,涉及,有关
Section D
1. seem to do sth. 似乎做某事
2. it seems that + 从句
3. be covered with被……覆盖
4. be short of 短缺
5. the shortage of………的短缺
6. avoid doing sth. 避免做某事
7. save water 节约用水
8. make progress in 在某方面取得进步
9. sea water 海水
10. fresh water 淡水
【词形转换】
1.complete v.完成,结束
adj.完整的
completely adv.彻底地,完整地
2.use v.使用
n.用途
useful adj.有用的
user n.使用者
reuse v.再次使用,重新使用
3.behavior n.[U]行为,举止
behave v.行为,举止
4.discover v.发现,找到
discovery n.[U]发现; [C]被发现的事物
5.sand n.沙子
sandy adj.沙的
away 的词组
put away 收起来
give away 赠送
run away 逃跑
keep away from 远离
throw away 扔掉
blow away 吹走
fly away 飞走
Wash away 冲走
习题:
1. We must do something to stop the river from _____ too dirty.
A. to get B. got C. gets D. getting
2. Kathy can write _______English but she can read _______ English words.
A. little; few B. a few; a little C. little; a few D. few; a little
3. _____ we were talking, the teacher came in.
A. When B. While