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                  英语语法小知识有哪些

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                    在学习英语过程中会遇到很多的语法问题比如比较级和最高级的用法对于这些语法你能够掌握吗?今天就跟大?#21307;?#32461;它们的用法希望大家喜欢!

                    英语比较级和最高级的用法

                    一、形容词、副词的比较级和最高级的构成规则

                    1.一般单音节词和少数以-er-ow结尾的双音节词比较级在后面加-er最高级在后面加-est;

                    (1)单音节词

                    如small→smaller→smallest short→shorter→shortest

                    tall→taller→tallest great→greater→greatest

                    (2)双音节词

                    如clever→cleverer→cleverest narrow→narrower→narrowest

                    2.以不发音e结尾的单音节词比较在原级后加-r最高级在原级后加-st;

                    如large→larger→largest nice→nicer→nicest able→abler→ablest

                    3.在重读闭音节(即辅音+元音+辅音)中?#20154;?#20889;末尾的辅音字母比较级加-er最高级加-est;

                    如big→bigger→biggest hot→hotter→hottest fat→fatter→fattest

                    4.以“辅音字母+y”结尾的双音节词 把y改为i比较级加-er最高级加-est;

                    如easy→easier→easiest heavy→heavier→heaviest

                    busy→busier→busiest happy→happier→happiest

                    5.其他双音节词和多音节词比较级在前面加more最高级在前面加most;

                    如beautiful→more beautiful→most beautiful

                    different→more different→most different

                    easily→more easily→most easily

                    注意(1)形容词最高级前通常必须用定冠词 the副词最高级前可不用。

                    例句 The Sahara is the biggest desert in the world.

                    (2) 形容词most前面没有the不表示最高级的含义只表示"非常"。

                    It is a most important problem.

                    =It is a very important problem.

                    6.有少数形容词、副词的比较级和最高级是不规则的必须熟记。

                    如good→better→best well→better→best

                    bad→worse→worst ill→worse→worst

                    old→older/elder→oldest/eldest

                    many/much→more→most little→less→least

                    far →further/farther→ furthest/farthest

                    二、形容词、副词的比较级和最高级的用法

                    1.“A + be +形容词比较级 + than + B” 意思为“A比B更……”。

                    如This tree is taller than that one. 这棵树比那棵树高。

                    注意

                     在含有连词than的比较级中前后的比较对象必须是同一范畴即同类事物之间的比较。

                    在比较级前面使用much表示程度程度“?#24247;?#22810;”。

                    如A watermelon is much bigger than an apple.

                     very, quite一般只能修饰原级不能修饰比较级。

                    2.“比较级 + and + 比较级”或“more and more +原级”表示“越来越……”

                    如It becomes warmer and warmer when spring comes.

                    春天来了天气变得越来越暖和了。

                    It is getting cooler and cooler.

                    天气越来越凉爽。

                    The wind became more and more heavily.

                    风变得越来越大。

                    Our school is becoming more and more beautiful.

                    我们的学校变得越来越美丽。

                    3.在含有or的选择疑问句中如果有两者供选择前面的形容词要用比较级?#38382;健?/p>

                    如Who is taller,Tim or Tom? 谁更高Tim还是Tom?

                    4. “the +比较级……, the+比较级”表示“越……越……”。

                    The more money you make, the more you spend.

                    钱你赚得越多花得越多。

                    The soonerthe better.

                    越快越好。

                    5. 表示倍数的比较级用法

                    . A is …times the size /height/length/width of B.

                    如The new building is three times the height of the old one.

                    这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高)

                    . A is …times as big /high/long/wide/large as B.

                    如Asia is four times as large as Europe.

                    亚洲是欧洲的四倍大。(亚洲比欧洲大三倍)

                    . A is …times larger /higher/longer/wider than B.

                    如Our school is twice bigger than yours.

                    我们学校比你们学校大两倍。

                    6.形容词、副词的最高级?#38382;?#20027;要用来表示三者或三者以上人或事物的比较表示“最……”的意思。

                    句子中有表示范围的词或短语。如of the three, in our class等等。

                    如He is the tallest in our class.

                    他在我们班里是最高的。

                    7."否定词语+比较级""否定词语+ so… as"结构表示最高级含义。

                    Nothing is so easy as this.

                    =Nothing is easier than this.

                    =This is the easiest thing.

                    8. 比较级与最高级的转换

                    Mike is the most intelligent in his class.

                    Mike is more intelligent than any other student in his class

                    7.修饰比较级和最高级的词

                    1)可修饰比较级的词

                    .a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等。

                    . 还可以用表示倍数的词或度?#26869;?#35789;作修饰语。

                    . 以上词(除by far)外必须置于比较级形容词或副词的前面。

                    注意 使用最高级要注意将主语包括在比较范围内。

                    (错) Tom is the tallest of his three brothers.

                    (对) Tom is the tallest of the three brothers.

                    2)下列词可修饰最高级by far, far, much, mostly, almost。

                    This hat is nearly / almost the biggest.

                    注意

                    a. very可修饰最高级但位置与much不同。

                    This is the very best.

                    This is much the best.

                    b. 序数词通常只修饰最高级。

                    Africa is the second largest continent.

                    8.要避免重?#35789;?#29992;比较级。

                    (错) He is more cleverer than his brother.

                    (对) He is more clever than his brother.

                    (对) He is cleverer than his brother.

                    9.要避免将主语含在比较对象?#23567;?/p>

                    (错) China is larger that any country in Asia.

                    (对) China is larger than any other country in Asia.

                    10.要注意对应句型遵循前后一致的原则。

                    The population of Shanghai is larger than that of Beijing.

                    It is easier to make a plan than to carry it out.

                    11.要注意冠词的使用后有名词的时候前面才有可能有名词。

                    比较Which is larger, Canada or Australia?

                    Which is the larger country, Canada or Australia?

                    She is taller than her two sisters.

                    She is the taller of the two sisters.

                    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(喜欢的) ----- more fond , mostfondglad ----- more glad , most glad bored ---- more bored , most boredpleased---- more pleased , most pleased

                    二、不规则变化good /well------- better ,bestbad/badly/ill------ worse , worst many/much-------more , most little ------ less , least far ---- farther, farthest/ further , furthestold ---- older , oldest (GA)/ elder , eldest (GB)

                    三、下列形容词和副词的比较级和最高级有两?#20013;问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 friendlyclever----- 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 , true ,right , correct , extremely ...

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