课件28张PPT。 形容词和副词的比较级和最高级Unit 7 What's the highest mountain
in the world?
Section A Grammar focusWhat’s the highest mountain in the world? Qomolangma Qomolangma It is covered with snow all the year round. It’s 8844.43 high, the highest in the world. The Caspian Sea Which is the deepest salt lake in the world?
The Caspian Sea is the deepest of all the salt lakes. Grammar focus— What’s the highest mountain in the world?
— Qomolangma.
— How high is Qomolangma?
— It’s 8,844.43 meters high. It’s higher than any other mountain.— Which is the deepest salt lake in the world?
— The Caspian Sea is the deepest of all the salt lakes.
— Did you know that China is one of the oldest countries in the world?
— Yes, I did. It’s much older than the US. 大多数形容词有三个级。
1. 原级:
Structure : as ... as...与..….一样
e.g. Tim is as tall as Tom.
2. 比较级 (用于两者之间的比较):
Structure：形容词比较级＋ than ...
e.g. This box is bigger than that one. 形容词和副词的比较级和最高级3. 最高级(用于三者或三者以上的比较):
Structure:
the + 形容词的最高级＋of / in ...
e.g. Tom is the heaviest in our class. 规则变化
1) 一般情况下，单音节或双音节的形容词/副词比较级＋er， 最高级＋est。如:
few — fewer — fewest
small — smaller — smallest 等。 形容词、副词的比较级和最高级
规则变化和不规则变化2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如：
nice — nicer — nicest
large — larger — largest
3) 以辅音字母＋y结尾的变y为i＋er或est 如: easy — easier — easiest
happy — happier — happiest
再如：early, busy, heavy, lazy 也如此。 4) 重读闭音节，单辅音结尾的，双写这个辅音字母＋er 或 est的词：
① fat — fatter — fattest
② thin — thinner — thinnest
③ hot — hotter — hottest
④ big — bigger — biggest
⑤ wet — wetter — wettest 5) 多音节和部分双音节的词需要在形容词
原级前＋more 构成比较级，＋most 构
成最高级。如：
beautiful － more beautiful － most beautiful
又如: delicious, popular, important, interesting, expensiveb) 不规则变化：
good — better — best
well — better — best
bad — worse — worst
many/much — more — most far — farther —farthest (距离远)
far — further — furthest (程度深)
old — elder — eldest (长幼)
old — older — oldest (年龄)1. good
2. comfortable
3. big
4. happy
5. cheap
6. many
7. difficult
8. little better best
more comfortable most comfortable
bigger biggest
happier happiest
cheaper cheapest
more most
more difficult most difficult
less least写出比较级和最高级：形容词和副词比较级的用法 1.表示两者之间的选择,
可用“Which/Who … + 比较级，…or…?”.2.表示两者之间的比较，通常用连词 than 引导，
表示“更······一些”．3.much/far/a lot, even ,still ,a little/a bit …
修饰比较级,表示程度.Who runs faster, he or she?He runs faster than she.He runs much faster than she.4. “比较级+and+比较级”表示“越来越……”5. “the+比较级 , the + 比较级”表示“ 越…, 就越 …” He becomes healthier and healthier.The more you exercise, the healthier
you will be.Shanghai is becoming more and more modern.1.比较级 + and +比较级 越来越…
2.the+比较级 , the + 比较级 越…, 就越 … 3._______________you are, _________mistakes you
will make. (你越仔细，做错的题目就越少）
4. __________you eat, _________you’ll be.
(你吃得越多,就越胖)The more carefulthe fewerThe morethe fatter1.The girl becomes ______________________.
(越来越漂亮）more and more beautiful2. The weather is getting _________________.
(越来越槽糕）worse and worse1.表示三者或三者以上比较,可用”Which/Who …
+最高级,…,…or …?”表示.2. 最高级+of (同类比较) in… (范围比较)
4.one of +形容词最高级+名词复数表示“最… 之一”3. 序数词修饰最高级形容词和副词的最高级的用法Who is the tallest, Tom , Mike , or Jack?Tom is the tallest of the three.Mike is the second tallest student in our class.Jack is one of the tallest students in our class.Tom runs (the) fastest in our class.同级比较 ① as + adj./adv. + as? e.g. She is as thin as Lily. ? ? He writes as carefully as Linda. ② not + as/so + adj./adv. + as? e.g. Tony didn't run so fast as Carter?Fill in the blanks with the correct forms of the words in the box.big much popular long old high1. The Amazon River is one of the _______ rivers in the world. It’s a little _______ than the Yangtze River.
2. Qomolangma is 8,844.43 meters _____. It’s one of the most ________ places for serious mountain climbers.longestlongerhighpopular4a3. No ocean in the world is as _____ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is _______ smaller.bigoldermuch太平洋n. 大海；海洋Self check1. Our family has bought a car so we can travel _____ than before. ??
most easily? ? B. less easily? ?
C. easily? ? D. more easily??
2. My father told me a story last night. It is ____ one I’ve ever heard. ??
the funniest? ? B. funniest? ?
C. funnier? ? D. the funnier? ?DA3. The _____ friends you have, the ____ you will be. ? ?? ?? ???
A. more, happy? ? B. many, happy? ?
C. more, happier? ?D. many, happier
4. When he heard a cry for help, he ran out as _______ as he could.
hardly? ?? ? B. quickly? ?? ?
C. finally? ?? ? D. slowlyCB5. This place is not big enough for Lucy’s birthday party. We should find a _____ one. ??
big? ?? ?? ?? ??? B. small? ?? ?? ?
C. bigger? ?? ?? ?? ? D. smaller
6. I study English as ____ as my brother.
A. hard B. harder C. hardestCA 1.Hainan is a very large Island .It is the
second _________ island in china. (large)
2.Our teacher is as ______ as before. (busy).
3.He is ______________ among us. (careful)
4.Li Lei jumped far ______ than Jim. (far)
5.The busier he is, the ________ he feels. (happy)
6.I think Yao Ming is one of ____________
basketball players in NBA. (hot)
busythe most carefulfartherhappierlargestthe hottest完成句子 Homework for today!
4b Write two comparisons about two topics. Write true facts
4c Write five questions using comparisons. Then ask your partner your questions.
