第三部分 LANGUAGE POINTS

1. 推荐背诵：Pollution is the price we pay for an overpopulated, over industrialized planet. 污染就是我们为这个人口过密、过度工业化的星球所付出的代价。
the price we pay for 为...负出代价，如：

Losing health is the price he paid for his hard work. 失去健康是他过度工作而负出的惨重代价。

2. There are only four ways you can deal with rubbish: dump it, burn it, turn it into something you can use again, attempt to produce less of it.

dump it, burn it, ... produce less of it, 并列平行结构，如：

There are some good ways to study English well: listen, speak, read and write. 强调动作study

There are four good ways to study English: listening, speaking, reading and writing. 强调方法ways新概念网上学习

另外句中，turn it into something you can use again可以改成reuse it或 recycle it更简洁些。

3. 推荐背诵：We keep trying all four methods, but the sheer volume of rubbish we produce worldwide threatens to overwhelm us.

threaten to do 威胁，预示(危险)，如：

The coming earthquake threatens the village. 即将发生的地震威胁着这个村庄。Dark clouds threaten a heavy storm. 乌云预示着有一场风暴。(threaten 预测厄运)The sun promises a good day. 阳光预示着一个好的日子。(promise 预测好的未来)

4. 推荐背诵：The need to produce ever-increasing quantities of cheap food leads to a different kind of pollution. 日益增长的对廉价食物的需求导致了另一种形式的污染。
leads to: result in, cause, bring about 导致