人教版八下英语unit7 知识点归纳

八下unit7 知识点归纳
语法:
形容词和副词的最高级
1. 表示三者或三者以上人或事物的比较。

2. 常用of( in)短语来说明比较范围。

3. 形容词最高级前要加定冠词the (有形容词性物主代词或名词所有格修饰时the可以省略eg: my best friend), 副词最高级前的the可以省略eg: I jump( the) highest.
4. 形容词和副词变最高级的规则:
一般情况在词尾加est short shortest
以字母e结尾的词在词尾加st late latest
重读闭音节词词尾只有一个辅音字母时, 先双写该辅音字母，
再加est thin thinnest
以辅音字母加y结尾的双音节词，先把y改为i,
再加est early earliest
多音节词和部分双音节词，在词前加most
interesting most interesting
以形容词加ly构成的副词，在词前加most clearly most clearly 5. 基本句型
主语+谓语+the+最高级
eg: I'm the tallest boy in my class.
I run( the )fastest in my class.
主语+谓语+one of the+最高级(最...之一)
eg: Tom is one of the tallest boy in my class.
主语+谓语+the+序数词+最高级（第几大，长，远等）eg: The yellow river is the second longest river in China.
知识点:
1. square meter 平方米square kilometer 平方千米
2. population 用法:
population作主语谓语动词用单三
eg: The population of the village is 5,000.
population与分数百分数连用时, 谓语动词用复数
eg: Ten percent of the population of the city are Chinese.
形容population的多少用large或small
eg: The city has a large /small population.
询问人口数常用: What's the population of...
eg: What's the population of America?
3. Asia n. 亚洲Asian adj. 亚洲的
eg: China is in Asia.
China is an Asian country.
4. feel free to do 随便做某事
eg: Feel free to ask me any question.
5. tour n. 旅行tourist n. 旅行者
6. protect...from... 保护...不受...侵害
eg: Sunglasses can protect our eyes from sunshine.
7. protect v. protection n. 保护
eg: Don't worry, I can protect you.
The endangered animals need protection.
8. as far as I know 就我所知
9. take in 吸入; 收留
eg: We can take in fresh air in the mountains.
I want to take in the poor child.
10. succeed in doing 成功做某事
11. in the face of 面对
12. force n. 力,力量v. 强迫force sb to do sth eg: Don't force others to do what they don't want to do.
13. an adult panda 一只成年熊猫
14. be awake 醒着
eg: He is awake.
15. excite v . 使激动excitement n. 激动
16. ill adj. 生病的illness n. 疾病。