[K12学习]九年级英语全册 Unit 13 We’re trying to save the ea

Unit13 必考知识点汇编
1. If their numbers drop too low, it will bring danger to all ocean life.
如果它们的数量降到太低，将会给所有的海洋生物带来危险。

（教材第99页） 中考链接
考查if用法
(2013 •重庆中考) It will be hard for us to get up in the morning if we____to bed too late.
A. go
B. went
C. will go
D. have gone
【答案】A
【解析】if引导的条件状语从句，主句用一般将来时，从句用一般现在时，故选A。

2. So far, no scientific studies have, shown that shark fins are good for health, so why eat them?
到目前，没有科学研究显示鲨鱼鳍对健康有好处，所以为什么要吃它们呢？（教材第99页） 中考链接
考查动词时态的用法
(2012 •十堰中考) Ben is a foreign teacher. So far, he _____ in Shiyan for five years.
A. was teaching
B. has taught
C. will teach
D. taught
【答案】B
【解析】考查动词时态的用法。

根据时间状语So far可知要用现在完成时，故选B。

3. Jessica Wong from Hong Kong uses old clothes that people don’t wear anymore to make bags.
来自香港的杰西卡•王使用人们不再穿的旧衣服来制作袋子。

（教材第102页） 中考链接
考查定语从句引导词的用法
(2012 •南京中考) The English-Chinese dictionary _____ my father bought for me many years ago is still of great value.
A. whose
B. when
C. who
D. that
【答案】D
【解析】考查定语从句引导词的用法。

先行词为dictionary，指物，关系代词用which或that来引导，故选D。

4. The air pollution is getting worse and worse.
空气污染正变得越来越糟糕。

（教材第104页）
中考链接
考查形容词比较级的用法
(2013 •鞍山中考) After the rebuilding,our school is becoming _________.
A. more and more beautiful
B. beautiful and beautiful
C. more beautiful and beautiful
D. the more beautiful
【答案】A
【解析】考查形容词比较级的用法。

比较级连用表示“越来越……”，构成为“比较级+ and+比较级”或“more and more+形容词”，故选A。