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his building looks not so(as)high as that one.Mr Sun speaks English as fluently as you.This room is three times as 1arge as that one.2.比較級(jí)和最高級(jí)的構(gòu)成和用法1)比較級(jí)和最高級(jí)的構(gòu)成.①單音節(jié)形容詞以及少數(shù)以er,ow結(jié)尾的形容詞和副詞加“er”,“est”.例如:great greater greatestnarrow narrower narrowestfast faster fastestclever cleverer cleverest②以e結(jié)尾的單音節(jié)形容詞和副詞后以及少數(shù)以ble,ple結(jié)尾的雙音節(jié)形容詞和副詞后,加“r”,“st”.例如: 1arge 1arger 1argestable abler ablestsimple simplex simplest③以一個(gè)輔音結(jié)尾的單音節(jié)形容詞,其前的元音字母發(fā)短元音時(shí),該輔音字母要雙寫,然后加“er”“est”。例如:hot, hotter hottest ④以輔音和y結(jié)尾的形客詞和少數(shù)不是形容詞加1y構(gòu)成的詞,要將y改為i,再加“er”,“est”。例如:easy easier easiestearly earlier earliesthappy happier happiest⑤一般雙音節(jié)詞、多音節(jié)形容詞和副詞在原級(jí)前加more或most,例如:beautifu1 more beautiful most beautifulcarefully morecarefu11y most carefu1ly⑥少數(shù)單音節(jié)形容詞也加more和most構(gòu)成比較級(jí)和最高級(jí)。例如:tired more tired most tired pleased more pleased most—pleased⑦下列形容詞,副詞的比較級(jí)和最高級(jí)可有兩種構(gòu)成方法。cruel crueler cruelest more cruel most crueloften oftener oftenest more often most often strict stricter strictestmore strict most strictfriendly friendlier friendliestmore friendly most friendly ⑧下列形容詞,副詞的比較級(jí)和最高級(jí)的構(gòu)成不規(guī)則。原 級(jí)比較級(jí)最高級(jí)good,wellbetterbestbad,i11,badlyworse worstmany,muchmoremostlittlelessleastfarfarther;furtherfarthest;furthestoldolder;elderoldest;eldest 2)比較級(jí)的用法①雙方比較,表示一方超過另一方時(shí),用“比較級(jí)+the”的結(jié)構(gòu)表示。例如:This pen is better than that one.②表示一方不及另一方時(shí),用“1ess+原級(jí)+than”的結(jié)構(gòu)表示。例如:This room is less beautiful than that one.③表示一方超過另一方的程度或數(shù)量時(shí),可以比較級(jí)前加表示程度的狀語,如even,a lot,a bit,a litt1e,still,much,far, yet,by :He works even harder,than before.如:She is better than she was .Please e earlier tomorrow.請(qǐng)明天早點(diǎn)來。注意,by far通常用于強(qiáng)調(diào)最高級(jí)。用于比較級(jí)時(shí),一般放在比較級(jí)的后面爭如放在前面,應(yīng)在二者中間加“the”。如:He is taller by far than his brother.He is by far the taller of the two brothers.④表示一方,隨另一方的程度而變化時(shí),用“the+比較級(jí)(主語+謂語)the+比較級(jí)(主語+謂語)”的結(jié)構(gòu)。例如:The harder he works,the happier he feels.⑤不與其它事物相比,表示本身程度的敵變時(shí),用“比較級(jí)+and+比較級(jí)”的結(jié)構(gòu)。例如:The weather is getting colder and colder.The girl bees more and more beautiful.⑥某些以or結(jié)尾的形容詞進(jìn)秤比較時(shí),用to代替than.(這些詞有inferior,superior,junior,senior,prior等).例如:He is superior to Mr Wang in Mathematics.⑦在比較從句中為了避句重復(fù),我們通常用that(those),one(ones)代替前面出現(xiàn)的名詞。that指物,one只能代替可數(shù)名詞。例如:The book on the table is more interesting than that on the desk.A box made of iron is stronger than one made of wood.⑧表示倍數(shù)的比較級(jí)有如下幾種句