高中英语知识点归纳:高中英语必修四知识点总结
互联网2019-03-21 16:26
Unit2 Working the land
【重点词汇、短语】
1. struggle 斗争
2. expand 使变大,伸展
3. thanks to 幸亏,由于
4. rid 摆脱
5. rid…of 摆脱,除去
6. be satisfied with 对…感到满意
7. would rather 宁愿
8. therefore 因此
9. export 出口
10. regret 后悔,遗憾
11. build up 逐渐增加,建立,开发
12. lead to 导致
13. focus on 集中与
14. reduce 减少
15. keep...free from/of 使…免受影响
16. comment 评论,议论【重点句型】
1. Have you ever grown any plants? If so, whatdid you do to grow them? If not, what kind of plant would you like to trygrowing?
你种过植物吗?如果种过的话,你是怎么种植的?如果没有种过的话,你想要尝试种植什么植物?
△ If so 为省略句式,意为“如果是这样的话”,if 用作连词,so 用来代替上文的内容,以避免重复。If not 意为“如果不是这样的话,否则,要不然”,意义与 If so 相反。
2. In 1974, he became the first agriculturalpioneer in the world to grow rice that has a high output.
1974年,他成了世界上第一位种植高产水稻的农业先锋。
△不定式放在表示次序的词如 the first, the last 以及 the only, the very,the right, the best
等词后面作定语,且与所修饰的名词之间构成逻辑上的主谓关系。
3. Using his hybrid rice, framers are producingharvest twice as large as before. 用他的杂交水稻,农民种出的粮食是以前的两倍。
△“…times as+形容词/副词的原级+as”为常见的倍数表达法,意为“是……的几倍”。
Thisroom is three times as big as that one.
这个房间是那个房间的三倍大。
知识拓展
英语中常见的倍数表达法还有:
This room is twice bigger than that one.
=This room is three times the size of that one.
这个房间是那个房间的三倍大。
The output of TV sets in our factory is 15 times that of ten years ago.
= The output …is 15 times what it was tenyears ago.
我们厂电视机的产量是 10 年前的 15 倍。【语法总结】主谓一致
动名词
动词的 ing 形式如果是名词,这种形式叫做动名词。动名词具有名词的性质,因此在句中可以作主语、表语、宾语、定语等。
一. 动名词的四种形式及其意义
①基本形式:doing (表示主动)
②被动式:being done(表示被动)
③完成式:having done(表示主动和完成)
④完成被动式:having been done(表示被动和完成)例如:
Travelling in space by ordinary people will be common in the future.
在未来,普通人在太空旅行将会是普遍的事情。
Freddy and his band could go nowhere without being followed by their fans. Freddy 和他的乐队到哪里都被他们的粉丝跟着。
I have no idea of his having done such a thing against you.
我不知道他做过这样一件违背你的事情。
Many customers complain of having been given short weight at that shop.
很多顾客抱怨在那家商店被缺斤少两过。
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