朗文4a第五六课 比较级和最高级.doc

一、形容词、副词的比较级和最高级的构成规则1大多数单词的变法smallsmallersmallest shortshortershortest greatgreatergreatest clevercleverercleverest narrownarrowernarrowest talltallertallest 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；largelargerlargest nicenicernicest 3 先双写末尾的辅音字母，比较级加-er，最高级加-est；bigbiggerbiggest hothotterhottest fatfatterfattest thin-thinner-thinnest new-newer/newest sad-sadder-saddest red-redder-reddest4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；easyeasiereasiest heavyheavierheaviest busybusierbusiest happyhappierhappiest5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；beautifulmore beautifulmost beautifuldifferentmore differentmost different 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。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。good-better-best 好的well-better-best 身体好的bad-worse-worst 坏的ill-worse-worst病的many-more-most 许多much-more-most 许多few-less-least少数几个little-less-least 少数一点儿far-further-furthest 更进一步，程度far-farther-farthest 更远，路程old-older-oldest年老的（指年纪）old-elder-eldest年老的（指兄弟姐妹的排行）二、形容词、副词的比较级和最高级的用法 “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“强得多”。如：A watermelon is much bigger than an apple.形容词、副词的最高级形式主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。【练习】一1. My school is _, but Toms school is _than mine. And Sallys school is the _. (small)2. Rabbits can run _, but tigers can run _ than rabbits, and cheetahs can run _of the three. (fast) 3.Pig is _, but deer is _than pig, and elephant is the _ (heavy)4. Im _, but she is _ than me. (beautiful) 5. Every day is _. But today is the _ day I have ever had. (busy) 6. I think pizza is the _ food of all. (delicious)7My brother is two years _ (old) than me.8. Is your sister _(young) than you? Yes,she is.9. Who is _(thin),you or Helen? Helen is.10. Whose pencil-box is _ (big),yours or hers? Hers is.11Ben jumps _ (high) than some of the boys in his class. 12Does Nancy sing _(well) than Helen? Yes, she does. 13My eyes are _(big) than hers. 14Which is _(heavy),the elephant or the pig? 15Who gets up _ (early),Tim or Tom? 16Do the girls get up_(early) than the boys? No,they_.17Jim runs _ (slow). But Ben runs _(slow).二，根据句意写出所缺的单词(1) Im 12 years old. Youre 14. Im than you.(2) A rabbits tail is than a monkeys tail.(3) An elephant is than a pig.(4) A lake is than a sea.(5) A basketball is than a football.三，选出合适的单词完成句子heavy tall long much many big (1) How is the Yellow River?(2) How is Mr Green? Hes 175cm.(3) How are your feet? I we