英语中的比较级和过去式到底该怎么改
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英语中的比较级和过去式到底该怎么改
![英语中的比较级和过去式到底该怎么改](/uploads/image/z/2249135-71-5.jpg?t=%E8%8B%B1%E8%AF%AD%E4%B8%AD%E7%9A%84%E6%AF%94%E8%BE%83%E7%BA%A7%E5%92%8C%E8%BF%87%E5%8E%BB%E5%BC%8F%E5%88%B0%E5%BA%95%E8%AF%A5%E6%80%8E%E4%B9%88%E6%94%B9)
比较级的构成规则 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,先双写末尾的辅音字母,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 过去式的构成规则 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.规则动词的过去式变化如下:(1)一般情况下,动词词尾加 -ed ,如:worked played wanted acted (2)以不发音的 -e 结尾动词,动词词尾加 -d,如:lived moved decided declined hoped judged raised wiped (3)以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如:studied tried copied justified cried carried embodied emptied (4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如:stopped begged fretted dragged dropped planned dotted dripped (5)注:不规则动词的过去式变化规律性不强,须多加记忆.