人教版八年级下册Unit7What's the highest mountain in the world?复习课件(共20张PPT)

(共20张PPT)
Unit 7
What's the highest mountain in the world
1. 规则变化:
①单音节词和少数双音节词一般在词尾后加-er 构成比较级 或-est构成最高级.
②以不发音的字母e结尾的单词在词尾直接加r或st.
③以“辅音字母＋y”结尾的词，变y为i，再加er或est.
④在重读闭音节中，末尾只有一个辅音字母，双写这个辅音字母，再加er或est.
⑤多音节词和部分双音节词在词前加more或most.
2. 不规则变化：
原级 比较级 最高级
good /well
bad /ill
little
many /much
far
old
拓：Farther和Further
技巧:当你实际测量或知道两个实体之间的距离
时，使用“Farther”
eg:Because of the fog,we aren't able to see farther than 30 meters.
否则你可以使用“Further”。
eg:further study进修；继续深造
换句话说，如果没有提到或暗示实际距离，可以使用“Further”，它也可以用来表示附加的或者更进一步的。
Have a try 写出下列词的比较级和最高级
1、fast，easy，fat， popular，hungry，busy
2、happy ，interesting，lazy，clever ，heavy
3、careful，early, thin，good，hot，few，little
二、原级、比较级和最高级的用法：
1.原级的用法：
肯定句： as + 原级+ as +…
eg: You are as beautiful as me.
否定句： not as/so + 原级+ as +…
eg:博尔特 can't run so/as fast as me.
2.比较级的用法：
① “比较级+than+… ”
eg:He is more handsome than you.
②“Which/Who is + 比较级…，A or B ”
eg:who is more handsome You or him
③“比较级＋and＋比较级” 表示“越来越…”
eg: xxx become more and more beautiful.
④“the+比较级…, the+比较级…”“越…就越…”
eg: The harder we study , the better grades we will get.
⑤表示不及另一方时，用“less+原级+than…”
eg:I have less money than 马云.
⑥the+比较级+of the two
eg:XXX is the taller of you two.
能修饰原级的词有：
能修饰比较级的词有：
(表示“程度”)
注意：
very, so, as, too, quite, more
much, a little, a lot, a bit, even, still
show time
1.I think the story is not so ___ as that one.
A. interesting B. interested
C. more interesting D. most interesting
2.When we speak to people, we should be _____ .
A. as polite as possible
B. as polite as possibly
C. as politely as possible
D. as politely as possibly
A
A
3. I think science is ______ than Japanese.
A. much important
B. important
C. much more important
D. more much important
4.These children are __ this year than they were last year.
A. more tall B. more taller
C. very taller D. much taller
C
D
3.最高级的用法：
① “the+最高级+in/of(范围）… ”
eg:ShangH is the biggest city in China.
②“Which / Who is +the 最高级…？”
eg:Which is the biggest city in China
③“one of the+最高级+名词复数in/of(围）… ”
eg:ShangH is one of the most biggest cities in China.
④“the+序数词+ 最高级…？”“第几最…”
eg:DongG is the second biggest city in China.
当最高级前面有物主代词或名词所有格时， 不加定冠词 the。
注意：
例如：Tom is Lucy’s best friend.
Tuesday is her busiest day.
1.Beijing is one of ________ in China.
A. the largest city B. the large cities
C. the larger cities D. the largest cities
2.Among the four girls，Mary is the second____．
A．tall B．taller
C．tallest D．the tallest
Have a try
D
C
1.Mr. Smith is _________ man in this office. (rich)
2. Winter is _________ season of the years. (cold)
3. This radio is not so ________ as that one. (cheap)
4. It is much _______ today than yesterday. (hot)
5. She is a little ________ than her classmates. (careful)
6. ________ people came to the meeting than last time. (many)
7. Which book is ________, this one or that one (easy)
Have a try
Language Points
1.据我所知
as far as I know=so far as I know
①据我所知，他们今天不来了。
So far as I know，they’re not coming today.
2.放弃某物/做某事
①He gave up （learn）a third language after he got the job.
②The doctor advised me to give up （smoke）
③He has to give up his （study）because of illness.
give up sth/doing sth
常考短语
做某事成功
冒着生命危险
面对困难
一个大挑战
实现我们的梦想
许多次
为..准备
在未来
保护…不受…
succeed in doing sth.
risk one’s life
in the face of difficulties
a big challenge
achieve our dreams
many times
prepare for…
in the future
protect …from (doing sth.)
Extra Point
1、population
◆ population意为“人口”时，它在句中作主语时，谓语动词总是用单数形式。也可用复数,侧重个体.
eg: Half the world’s population doesn’t get enough to eat.
One third of the population here are workers.
(指不同的地区、时期、民族的人口时,可用复数形式)
◆ 当表示人口“多”或“少”时，常用形容词large，big或small修饰population.
eg: The country has a large / big / small population.
常用句型为“The population of +某地+ is + 数词”或“某地+ has a population of + 数词”，表示“某地有多少人口”
eg: The population of the village is 500.
The town has a population of 10,000.
Thank you