八下Unit7知识点

八下Unit7知识要点

八年级下Unit7知识点

【学一学】1.It’s 8,844 meters high.它有8,844米高。

Itis…meters/kolimeters/squarekilometers+high(long,wide…)+(insize）.它……米高（长,宽……)。“有多长（宽，高……）”时，将数词和数量单位放在表示长宽高的形容词前

【做一做】

1.The table is two meters _______(long) and one meter ______（wide）

2.---How long is the bridge ?

---It’s 1,000 meters _______.

A. the longest

B. longer

C. longest

D. long

【学一学】2.China has the biggest population in the world .

①Population是集合名词，无复数形式，在句中作主语时，指一个整体，谓语动词用单数。The population today is growing veryfast .

②.表示某一范围内有多少人口时，用”have/hasapopulationof+数

字”Indiahasapopulation of 1 billion .

③问某地有多少人口时，用What is /was the population of …?或How large is / was thepopulation of …？

④表示人口多少时，用large /small ,而不能用many /more /few等。

【做一做】

1 ______ is the population of our city ?

---Sorry , I don’t know .

A. How

B. What

C. How many

D. How much

2.China _____ a population of 13 billion .

A. have

B. has

C. is

D. are

【学一学】3.China has a much longer history than the US .

一些副词可以位于形容词，副词比较级之前表示比较的程度，

如;far,much,even ,a lot , a little , a bit等。

【做一做】

1.This shirt is _____ than the one on the desk .

A. much more beautiful

B. a lot of beautiful

C. more far beautiful

D. beautiful

2.I study hard this term , but Jenny studies much ______ .

A. hard

B. harder

C. hardest

D. the hardest

【学一学】4.one of the +形容词最高级+复数名词……

【做一做】

1.One of __________(dangerous) sports is mountain climbing .

2. Alex is one of my good _________ ( friend ).

【学一学】5.It is very hard to take in air as you get near the top=To do sth is hard .It’s + adj.+（for sb.）+to do sth.

常用的形容词有hard、difficult、possible、important、useful等

【做一做】

1.It is important for us _______(learn ) English well.

2.It’s good _____ fresh air inthe morning .

A. to take in

B. have in

C. to take turns

D. give in

【学一学】6、Feel free to do sth按照自己的意愿做某事

【做一做】

Please feel free _____ ( ask ) me any question in class . 【学一学】7、形容词和副词的比较级和最高级

1.大多数形容词有三个级。

1)原级:常用结构as ... as...像..….一样否定; notas / so … as Zhang Hong is as tall as Tom.

2)比较级(用于两者之间的比较)

常用结构：形容词比较级＋than ...

He is taller than I.

3)最高级(用于三者或三者以上的比较)，

常用结构:

the +形容词的最高级＋of / in ...

He is the tallest of the three.

He is the funniest in his class.

2.形容词、副词比较级和最高规则变化和不规则变化。规则变化:

1)一般情况下，单音节或双音节的形容词

（或副词）比较级＋er，最高级＋est

clever－cleverer－cleverestfew－fewer－fewest