比较级和最高级归纳总结.ppt

Unit 7 Whats the highest mountain in the world?,Grammar focus, Whats the highest mountain in the world? Qomolangma. How high is Qomolangma? Its 8,844.43 meters high. Its higher than any other mountain., Which is the deepest salt lake in the world? The Caspian Sea is the deepest of all the salt lakes. Did you know that China is one of the oldest countries in the world? zxxk Yes, I did. Its much older than the US.,大多数形容词有三个级。 1. 原级: Structure : as . as. 像.一样 e.g. Tim is as tall as Tom. 2. 比较级 (用于两者之间的比较): Structure：形容词比较级 than . e.g. This box is bigger than that one.,形容词和副词的比较级和最高级,3. 最高级(用于三者或三者以上的比较): Structure: the + 形容词的最高级of / in . e.g. Tom is the heaviest in our class. He is the most popular in our school.,规则变化 1) 一般情况下，单音节或双音节的形容词/副词比较级er， 最高级est。如: clever cleverer cleverest few fewer fewest small smaller smallest 等。,形容词、副词的比较级和最高级 规则变化和不规则变化,2) 以e结尾的词，比较级r，最高级st 即可。 如： nice nicer nicest cute cuter cutest large larger largest 3) 以辅音字母y结尾的变y为ier或est 如: easy easier easiest happy happier happiest 再如：early, busy, heavy, dirty, lazy 也如此。,4) 重读闭音节，单辅音结尾的，双写这个辅音字母er 或 est的词： fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest zx。xk,5) 多音节和部分双音节的词需要在形容词 原级前more 构成比较级，the most 构 成最高级。如： beautiful more beautiful the most beautiful 又如: delicious, popular, important, interesting, expensive, creative 双音节的词如: careful more careful the most careful useful more useful the most useful,少数单音节词也是这样，如： pleased more pleased the most pleased tired more tired the most tired