Unit 7 What’s the highest mountain in the world?
重点短语:
feel free as far as I know in the face of
even though at birth walk into
fall over or so take in
many times endangered animals achieve one’s dream
语言知识归纳：
1. 比较级和最高级的特殊句型
① “get/ become + 形容词比较级 + and + 形容词比较级 ”表示“变得越来越……”，当形容词为多音节词（少数双音节词）时，用 “ more and more + 原级”。
It gets warmer and warmer when spring comes.
② “the + 形容词比较级……，the + 形容词比较级……”意为“越……就越……”。
The harder you work at your study, the better grades you will have.
③ “one of the +最高级+可数名词复数”表示“最……之一”。
Chengdu is one of the most beautiful cities in China.
④ This is/was + the +最高级+名词+that引导的定语从句。
This is the most interesting story I have ever read.
三级句型之间的转换
① 形容词比较级+than any other+单数名词
This book is more difficult than any other book here.
= This book is the most difficult of all.
形容词比较级+than the other+复数名词
Bill is taller than the other students in his class.
② 同级比较用as...as..., 否定式为not as/so...as...
He is as tall as his father.
He is not as tall as his father.
③“more+形容词”与“less+形容词”及“not so/as ...as”的互换。
This question is more difficult than that one.
=That question is less difficult than this one.
=That question isn’t so difficult as this one.
2. 数量的表达
英语中通常将数字放在单位词的前面，而将表示长、宽、高等的词放在单位词的后面。
固定句式为：主语+be+数词+形容词（长、宽、高、深……）。
The boy is 1.7 meters tall.
This building is 90 meters high.
3. China has the biggest population in the world.
① population是集体名词，没有复数形式，作主语时，其后谓语动词用单数形式。
The population of the school is 500.
② 指人口多少时，一般用large或small来表示。
The population of China is larger than that of America.
③ 提问“有多少人口”，用what 或how large, 而不用how many。
What’s the population of China?
4. succeed v. 成功，做到
succeed常与in连用，succeed in doing sth. (成功做某事）
Did you succeed in booking the ticket?
success n. 成功
Working hard can lead to success.
successful 用作形容词，意思是“成功的”。
Linda is a successful dancer and she dances well.
【例题】( ) -Dear friends, please read every sentence carefully. Details decide_____ or not.
A.success B.successful C.succeed
5. This elephant weighs many times more than this panda.
（1）表示两倍用twice,三倍（及以上）用“基数词+times”。
（2）倍数的表达：
A+be+倍数+as+形容词/副词原级+as+B
This classroom is three times as big as that one.
【例题】( )The car travels_____the train.
A. two time as fast as B.two times as fast as C.two time as faster as
6. We should protect whales from water pollution.
protect 保护、保卫
protect...from... “保护……免受……的侵害”
Everyone should protect the environment from pollution.
。