根据句意及汉语提示，在空格中填入正确的单词。每空限填一词。1. There is no _______ (怀疑) that computers are very useful. 2. _______ (尽管) Jim's uncle is old,-九年级英语-00教育-零零教育信息网

根据句意及汉语提示，在空格中填入正确的单词。每空限填一词。1. There is no _ (怀疑) that computers are very useful. 2. _ (尽管) Jim's uncle is old,-九年级英语

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形容词的比较级：
当两种物体之间相互比较时，我们要用形容词或副词的比较级；
当相互比较的物体是三个或三个以上时，我们就要用形容词或副词的最高级。

形容词的比较级和最高级的特殊变化规则：
一、少数单音节词前面加 more-, most- 构成比较级和最高级
tired ---- more tired , most tired
fond ----- more fond , most fond
glad ----- more glad , most glad
bored ---- more bored , most bored
pleased---- more pleased , most pleased

二、不规则变化
good /well------- better ,best
bad/badly/ill------ worse , worst
many/much-------more , most
little ------ less , least
far ---- farther, farthes / firther , furthest
old ---- older , oldest (GA)
---- older , oldest / elder , eldest (GB)

三、下列形容词和副词的比较级和最高级有两种形式
cruel----- crueler, cruelest /more cruel , most cruel
strict---- stricter , strictest /more strict , most strict
often----- oftener , oftenest / more often , most often
friendly------ friendlier , friendliest / more friendly , most friendly
clever----- cleverer, cleverest / more clever , most clever

四、下列形容词和副词没有比较级和最高（即表示”最高程度”或”绝对状态”的形容词和副词没有比较级和最高级）
empty , wrong , perfect , unique , extreme , excellent , favourite (GB)/ favorite (GA) , true , right , correct , extremely ...

形容词的比较级和最高级用法：
形容词比较等级用法：
1.没有比较对象时，用原级。
I have a new computer.
2.两者比较，程度相同。
A+系动词+as+adj.+as+B.
Our school is as beautiful as theirs.
3.两者比较，程度不同。
A+系动词+not as+adj.+as+B.
The weather here is not as hot as that in the south.
4.A比B更…
The earth is bigger than the moon.
5.比较级前可以用much,even,still,far,a lot,a little,a bit,any等修饰。
Your room is much bigger than mine.
I’m a little shorter than her.
6.用比较级可以表示最高级含义：
John is stronger than any other boy in his class.=John is stronger than any of the other boys.
两者不属于同一范畴，不能用other.
Chongqing is bigger than any city in Sichuang.
7.“比较级+and+比较级” 表示“越来越…”
China is becoming more and more beautiful.
Days are getting longer and longer.
8.用the+比较级，the+比较级表示”越…就越…”.
The busier he is, the happier he feels.
9. Which/Who+is+比较级 A或B？
A和B哪一个/谁更…?
Which is better,this one or that one?

最高级用法：
表示三者或三者以上的人或物的比较，一个在某方面超过其他两个或多个时，用最高级，结构是
主语+系动词+the+形容词最高级+of/in短语。
This story is the most interesting of the three.
1. one of the+形容词最高级+名词复数
它的意思是最…之一。
English is one of the most important languages in the world.
2. which/who…+is+形容词最高级
“…最...”
Which is the heaviest,the horse,the sheep or the elephant?
3.最高级前可以用序数词
The Yellow River is the second longest river in China.

形容词的比较级和最高级的变化规则：

构成	原级	比较级	最高级
一般加er，est	tall	taller	tallest
以字母e结尾只加 r,st	large	larger	largest
以一个辅音字母结尾的重读闭音节，双写这一辅音字母后再加er,est	red	redder	reddest
	hot	hotter	hottest
	thin	thinner	thinnest
以辅音字母+y结尾的词，将y变为i再加er,est	easy	easier	easiest
	happy	happier	happiest
	ugly	uglier	ugliest
	early	earlier	earliest
其他双音节词和多音节词，在词前加more或most	interesting	more interesting	most interesting

考点名称：实义动词的过去式

表示一般过去式的动词通常用动词的过去式形式来表示，而动词的过去式是在动词原形的基础上变化的。
动词的过去式可分为规则动词和不规则动词。

实意动词过去式变化规则:

分类	构成	例句
一般情况下	在词尾直接加ed	ask—asked work—worked
以不发音的e结尾	只加d	love—loved dance—danced
以辅音字母加y结尾	变y为i，再加-ed	try—tried study—studied
以一个元音字母和一个辅音结尾的重读音节结尾的动词	先双写末尾一个字母，再加ed	stop—stopped permit—permitted
“-ed”的读音规则	1.在清辅音后面读[t],如：help—helped[helpt] 2.在浊辅音或元音后读[d]，如：learn—learned 3.在[t]和[d]后读[id]，如：want—wantedneed—needed

注:以l结尾的动词，尾音节重读时，双写l,如control—controlled;
尾音节不重读时，双不双写都可以，如travel—traveled/traveled。
特例：picnic—picnicked，另外还有很多动词的过去式是不合乎上述规则的，常见的有:
常用的有：
begin—began,         bring—brought,        come—came,       draw—drew,
drink—drank,          drive—drove,          eat—ate,              feel—felt,
get—got,                  give—gave,              go—went,             grow—grew,
have (has)—had,      keep—kept,            know—knew,       leave—left,