内容正文:
Unit 3 I'm more outgoing than my sister.
单元语法清
语法精讲
形容词的比较级
1.形容词比较级的含义
形容词有三个等级:原级、比较级和最高级。其中比较级表示“更……”,用于两者(人或事物)之间的比较,说明“前者比后者更……”。
2.形容词比较级的构成
①一般在形容词词尾加er。
eg:small→smaller;smart→smarter
②以字母e结尾的形容词,在词尾加r。
eg:close→closer;nice→nicer
③以重读闭音节结尾且末尾只有一个辅音字母的形容词,要先双写这个辅音字母,再加er。
eg:big→bigger;thin→thinner
④以“辅音字母+y”结尾的形容词,先将y改为i,再加er。
eg:early→earlier;happy→happier
⑤多音节和部分双音节形容词,在其前加more构成比较级。
eg:beautiful→more beautiful
⑥部分不规则形容词的比较级
eg:good/well→better;bad→worse
many/much→more;little→less
old→older/elder;far→farther/further
3.形容词比较级的用法
①形容词的比较级结构为:形容词的比较级+than+比较对象,前后相比较的两个事物一定要属于同类。表示一个范围内两事物比较用“比较级+than+any other+单数名词”。
eg:He is taller than any other student in his class.他比班上任何一个学生的个子都高。
②as…as…意为“与……一样”,其否定形式为“not so/as…as…”,意为“不如……怎么样;不与……一样……”。它们也是一种表达比较的形式,注意as与as之间要用形容词或副词的原级。
③“the+比较级……,the+比较级……”表示“越……,就越……”。
eg:The more you read,the more you know.你书读得越多,你知道得就越多。
④“比较级+and+比较级”表示“越来越……”。
eg:Our city is more and more beautiful.我们的城市越来越漂亮了。
⑤修饰比较级可用much,a little,even,still,a lot等。
【注意】当要特指两者中“较(更)……”时,比较级前要加定冠词the。
⑥选择疑问句中,常用句型:
Which/Who+be动词+形容词比较级,A or B?
语法精练
一、用括号内所给单词的适当形式填空。
1.His brother is ________ (thin) than him.
2.Tom is ________ (hardworking) than Sam.
3.John is two years ________ (old) than I.
4.It's ________ (hot) today than it was yesterday.
5.Li Hua is ________ (short) and ________ (heavy) than Li Ming.
6.This question is ________ (easy) than that one.
7.Mary is ________ (hungry) than Mike.
8.This book is ________ (interesting) than that one.
thinner
more hardworking
older
hotter
shorter
heavier
easier
hungrier
more interesting
二、单项选择。
9.You are as ________ as your brother.
A.friend B.friendly
C.more friendly D.friendlier
10.—Is the bag heavy?
—Yes. It's ________ bigger than that one.
A.very B.so C.much D.too
11.Shanghai is bigger than ________ city in China.
A.any B.any other C.the other D.other
B
C
B
12. —I talked with my uncle on the computer last night.
—The Internet makes the world ________.
A.small and small
B.smalle