人教版八年级上册英语第四单元语法

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2020年8月7日09:58:27 评论 42 次浏览 3117字阅读10分23秒
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Unit4 Whats the best movie theater?

Grammar Focus(语法同步讲)

语法一、形容词的最高级的用法

  • 形容词最高级变化(形容词原级→形容词比较级→最高级)

规则变化:

  1. 词尾+est

tall--taller--tallest             old--older--oldest

  1. 以不发音的e结尾的单词+st

Large--larger--largest

  1. 以重读闭音节结尾,双写末尾辅音字母+est

big--bigger--biggest      hot--hotter--hottest

  1. 以辅音字母+y结尾的单词改y为i+est

busy--busier--busiest    early--earlier--earliest

其他多音节词:the most+形容词原级

beautiful--more beautiful--the most beautiful

不规则变化:

bad/ill---worse---worst  good/well---better---best      little---less---least

much/many---more----most   far---farther/further---farthest/furthest

old---older/elder---oldest/eldest

  • 形容词最高级的基本句式

The Yangtze River is the longest river in China .

The Yellow River is the second longest river in China .

句式一、A+be 动词+the+形容词最高级+范围(of/in/among)

句式二、A+be动词+the+序数词+形容词最高级+范围(of/in/among)

注意:当物主代词、指示代词或名词所有格+形容词最高级时(定冠词the省略)

This is our best lesson today.

  • 形容词比较级与最高级表达转换

Lilei is taller than any other student in his class.

→Li lei is the tallest sudent in his class.

 

Exercises:

用所给词的适当形式填空。

  1. He is the ___________(old) of the three boys .
  2. He is the _______(fat) among these students .
  3. He is the ______(good)teacher ,even though he has the ______(little )experience .

语法二:形容词比较级与最高级综合句式用法

 

  • .形容词比较级与最高级基本句式

 

形容词比较级与最高级的基本句式
 

 

比较级

A+be动词+形容词比较级+than B
Jane is taller than Mary.
主+be动词+the 形容词比较级+of the two
Jane is the taller of the twins.
最高级 主+be+the +形容词最高级+范围(of/in/among)
Jane is the tallest in her class.
  • 形容词比较级与最高级的常见句式(特殊疑问句)

Which one is more expensive,diamond or gold?

Which one is the most expensive,diamond,gold or silver?

  • 其他句式
形容词比较级与最高级的其他句式
比较级 比较级+and+比较级     “越来越...”
It is getting warmer and warmer. 天气正变的越来越暖和。
The+比较级,the+比较级  “越..., 越...”
The more, the better.  越多越好
最高级 The+序数词+形容词最高级+名词    “第...个最...的”
The Yellow River is the second longest river in China。
One of the +形容词最高级+复数名词  “是最...之一”
The Summer Palace is one of the most beautiful places in Beijing.

 

Exercises:

1.Vocabulary is one of ______ difficulties on your way of learning a foreign language.

  1. big   B. biggerC. biggestD. the biggest

2.用括号中所给单词的适当形式完成句子。

He is much ______, because he often gets home later and leaves home earlier than I. (busy)

3.Dereck is ______ of the two men.

  1. strong   B. strongerC. the strongerD. the strongest

 

语法三:副词最高级的变化及句式

  • 副词最高级(副词--副词比较级--副词最高级)

规则变化:

单音节与少数多音节

  1. 词尾+est

fast---faster---fastest

  1. 不发音的e结尾的单词加--r,--st

late--later--latest

  1. 其他最高级以ly结尾的单词

more+副词原级--most +副词原级

Slow--more slowly--most slowly    注:early---earlier---earliest

特殊变化:

Well--better--best       far---farther/further---farthest/furthest

Much---more---most   badly--worse--worst  little---less--least

  • 副词比较级与最高级的句式
副词比较级及最高级句式
比较级 He swims faster than me .  A+实义动词+副词比较级+than+B
He swims fater of the two.
最高级 He runs (the)fatest in his class. 主+实义动词+副词最高级+范围(in/of/among)
He jumps the second highest in his school.  主+实义动词+the +序数词+副词最高级+范围
Which sport do you like best,football,basketball or tennis?

比较级与最高级的转换:

The boy students harder than any other student in his class.

→The boy studies (the) hardest in his class.

The boy studies the second hardest in his class. (此时the 不可省略)

Exercises:

  1. She works _______(hard) of the four girls.
  2. She danced ________(graceful)of the four girls.
  3. John walks much _________(slow)than his sister.

 

 

 

 

 

 

 

 

 

Exercises答案:

语法一、

1.Oldest/eldest    2.fattest     3.best,least

语法二、

1.one of后面通常接形容词最高级再加名词复数,并且形容词最高级通常要加定冠词,故答案为D。

2.根据“他比我早出门晚回家”可知“他忙一些”,又因为空前面有much,故应用比较级,busy的比较级是busier。

3.Of the two men是表示“两者中”,应用“the +比较级”的结构,故正确答案为C。

语法三:

  1. (the)hardest   2.(the) most gracefully    3.more slowly
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