16. ____ free 释放

17. ____ the wild 在自然环境下

18. throw ____ 扔掉；浪费

19. ____ the go 忙个不停；四处奔走；跑来跑去

20. turn...inside ____ 把......翻过来

　☆交际用语☆

1. I can't agree with you on this point.

2. That's the point.

3. Well, it depends.

4. Does anyone share David's opinion?

5. I absolutely agree.

6. That's how I see it.

7. Why can't we drink the water in our rivers and lakes? Because the water is polluted.

8. Cars and factories cause air pollution. As a result of air pollution, many people get sick.

9. People get sick because of air pollution. It follows that we must do something about it.

　☆单词聚焦☆

1. adapt vt. 使适应；使配合

　(1) adapt + n. + to + n. 使......适应，使......适合

　He could not adapt his way of life to the school. 他的生活方式无法适应学校的要求。

　(2) adapt (oneself) to 适应......She quickly adapted to new circumstances. 她能够很快地适应新环境。/ I suggested he should adapt himself to his new conditions. 我建议他应该调整自己，以适应新的环境。

2. add vt. & vi. 增加，加入，补充说

　If the tea is too strong, add some more water. 如果茶太浓，再加些水。/ Many words have been added to this edition of the dictionary。这一版字典增加了很多词。/ The bad weather only added to our difficulties. 恶劣的天气只会增添我们的困难。/ "And I hope you will realize it one day." he added. 他接着说："我希耀你总有一天会明白这一点。" / I should like to add that we are pleased with the result. 我想补充一句，我们对这个成果感到高兴。

　[短语]

　add...to... 在......中加上...... add to 增加，增添

　add up 加起来 add up to 总计，总共有......

　Your carelessness added to our difficulty. 你的粗心增加了我们的困难。/ The money he spent added up to no more than ￡1,000. 他花的钱总计1000英镑。

3. add 的用法

▲ 构词：

① addition n. 加，加起来，增加物，增加，加法

② additional adj. 外加的，附加的，另加的

▲ 搭配：

① add sth in 算人；包括

② add A to B 把A加到B上，往A里添加B

③ add to 增加，加到

④ in addition 加上，又，另外

⑤ in addition to 加上，除......外，又

⑥ add sth up 把......加起来，总计

⑦ add up (to...)总计共达；表示，等于说。意味着；总而言之

　【考例】The president talked with the official for a long

time, ____ that he still trusted him.