(
课件网) 新人教八年级上册 Unit 3 Same or Different Grammar Focus 01 02 In this part, you will Learning objectives learn Comparatives with -(i)er and more; as... as. complete relevant grammar exercises. 3a Read the sentences and notice the comparatives in bold. Presentation _____ ← more _____ ← taller _____ ← shorter _____ ← louder _____ ← more colorful _____ ← better _____ ← earlier many tall short loud colorful well early 3a Read the sentences and notice the comparatives in bold. Presentation We use _____ to make a comparison. We usually can see _____ in a comparative sentence. comparatives “than” 同级的比较 A. 形容词和副词的比较级 大多数形容词和副词有三个等级：原级，即原形；比较级，表示“较……”或“更……一些”；最高级，表示“最”。 The apple is big. The apple is bigger than that one. The apple is the biggest of all. 比较级 单词类型 构成方法 例词 单音节词和部分双音节词 一般情况在词尾+er long→longer short→shorter 以不发音的e结尾的，直接+r nice→nicer large→larger 重读闭音节词且词尾只 有一个辅音字母, 双写末尾辅音，再加-er big→bigger hot→hotter 以 “辅音字母+y”结尾的双音节词, 变y为i, 再加-er busy→busier friendly→friendlier 多音节词和部分双音节词 词前加more quickly→more quickly interesting→more interesting 1. 形容词或副词的比较级的规则变化 2. 形容词或副词的比较级的不规则变化 原级 比较级 good/ well better bad/ badly worse many/much more little less far farther/further Her performance in the final exam was better than I expected. 她期末考试的表现比我预期的要好。 Regular exercise can help better your physical and mental health. 规律锻炼有助于改善你的身心健康。 当需要对两个人或物进行比较时,需要用到形容词或副词的比较级。在含有“比较级+than”的句型中,当than 前后所使用的实义动词相同时,通常用助动词代替后面的实义动词,该实义动词或助动词有时可以省略。常见的句型有: 3. 形容词和副词的比较级的用法和句型 My bike is newer than Tom’s (bike). 我的自行车比汤姆的(自行车)新。 He is more hard-working than me/ I. 他比我更勤奋。 A+ be 动词+ 形容词比较级+ than+ B. She has longer hair than her sister (does). 她的头发比她妹妹的长。 He runs faster than Tom (does). 他跑得比汤姆快。 A+实义动词+形容词比较级+名词+than +B. ③ A+实义动词+副词比较级+than+B. 注意： 可以修饰比较级的词或短语有：a little 和 a bit 表示“更……一点”; much、a lot和far表示“……得多”; even表示“甚至……”。 bigger and bigger 越来越大 more and more popular 越来越流行 4. 比较级的特殊结构: The more, the better. 越多越好。 The more you read, the more knowledge you will gain. 你读得越多，获得的知识就会越多。 ① 比较级+and+比较级 越来越…… the +比较级(+主语+谓语)，the+比较级(+主语+谓语) 越……, 越…… Which T-shirt is nicer, this one or that one 哪件t恤更好，这件还是那件？ Which season do you like better, spring or autumn 春天和秋天，你更喜欢哪个季节？ Who runs faster, Tom or Jack 汤姆和杰克，谁跑得更快？ Which / Who + 谓语+ 比较级， A or B？ 哪一个/ 谁更……，A还是B？ “as... as...”意为“像……一样……”，表示同级的比较, 两个as中间应 ... ...
