人教版英语八年级上册第三单元语法

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2020年6月30日17:18:17 2680字阅读8分56秒

语法讲解:

 

  • 形容词和副词的原级、比较级、最高级的构成

原级变比较级的规则变化:

①一般在词尾 +-er,-est

②以不发音的e结尾的词,在词尾+-r,-st

③“_________”结尾的重读闭音节且末尾只有一个辅音字母时,双写这个辅音字母再+er,-est

④以“___________+y” 变y为i,再加 +er,-est

⑤多音节和部分双音节词,在词前+more或most

注意:

①以“ly”结尾的副词,除early外, 一般加more 或most.

②有些形容词有两种变化方式 如:

healthy---healthier---healthiest/ more healthy---most healthy
friendly----friendlier --- friendliest / more friendly ----most friendly
clever----cleverer---cleverest / more clever ----most clever
原级变比较级的不规则变化:

good/well---_________---___________

bad/badly/ill---_________---___________

many/much---_________---___________

little---_________---___________

far---_________---___________/---_________---___________

old---_________---___________/---_________---___________

写出下列形容词副词的比较级最高级

important__________________ easy__________________ happy__________________

thin__________________    good__________________hot______________________

easily__________________  many__________________  nice___________________

delicious__________________few __________________  little__________________

2.形容词和副词原级的用法

①肯定:_________________ “…和…一样”

(相当于:the same+n. as与……一个样)

You are as _______ as me.你和我一样高。

He has as _________books as I (have=do).他的书和我的书一样多。

②否定_________________________“…不如…”

(相当于:…less +原级 + than… “……不如/没有……”)

His jacket ______ _____ _____ ______ that one.这件夹克衫没有那件便宜。

She _______ ________ ________ _________ books as I have.

I don’t run so fast as you.

I run ______ _______ ______ you.

He doesn’t play the violin so ______ as his father. A.good   B.better   C.well   D.best

③twice/数词times +as 原级 as“是……的几倍”

这个房间是我的房间的两倍。The room is ______  as _____ as mine=(my room).

你的苹果是我的苹果的四倍。________________________________.

④very/quite/so /as/too/really+原级

3.比较级基本句型

①… 比较级 + than … “……比……更……”(than后加名词,代词或者句子)

This cake is _________________  (味更美)that one.

Li Lei sings ___________(比…更好)Jim.

He is two years  _________(比…更大)me .

②“Which / Who is + 比较级, A or B?”

e.g. Which T-shirt is nicer, this one or that one?

③the+比较级+of the( two ) :  两者中较…的一个

Of the twins, she was______ ________hard-working .

④ 比较级+and+比较级   “越来越…… “

或more and more+原级“越来越…… ”e.g.  They talked ______ ____ _______ loudly.

越来越大________________ 越来越好________________ 越来越多________________

越来越少________________越来越坏________________越来越漂亮________________

越来越有趣________________ 越来越有用________________

⑤The比较级…,the+比较级…“越…就越… ”

The _______________ (exercise) you do, the ___________(strong) you’ll be.

⑥比较级常与much, even, far, than, a little, a bit, a lot 等连用.

(注意:)

①常用  _______代单数可数名词,

____________代替复数名词,

__________代替不可数名词/可数名词单数.

e.g.  The book here is newer than ______ ________ on the desk.

The apples on the tree are fresher than ________ in the box.

The weather in Wuhan is hotter than________ in Beijing.

②必须是同类事物之间的比较。

My house is much cleaner than _______.(=____ ______)

Peter is tall than Mike.

He speak English better than I(do).

He speak English better than me.(习惯用法)

③比较级前可用“数词+名词” 表示确定的度量。

e.g. I am (5 years) older than him.The room is (3 times) as large as that one.

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