人教版八年级上英语第3、4单元语法及知识点讲与练.pptx

八年级第三单元 知识点讲与练;;一、语法： 形容词和副词 的比较等级 ;a.原级对比 as—as b.比较级对比 --- adjer+than c.最高级 the+adjest+---in(of) ;1、形容词和副词的同级对比 ①as…as… 和……一样 I’m as tall as you. ② not as(so) +形容词或副词原形+ as 不如…… 一样（在否定句中常用so 来代替as）如， Beier can’t run fast Duoduo. ③ so/too/very/quite/rather---+原级 在以上两个句型中形容词或副词一定要用原级。 ( ) Your father eat so much as my father. A.isn’t B. doesn’t C.don’t D. aren’t ( ) Your room isn’t clean mine. A.so--as B. as--so C.as--as D. A or C ( ) You must write carefully my father. A.as -- as B. so--as C.as---so D. so—so ( ) Duoduo runs very but Yangyang runs even . A.fast;fast B. faster;fast C.fast;faster D. faster;faaster ;④.less / least +原级结构示表示降级的比较级.意为“……不如……”.表示一方不如另一方 如：This room is less beautiful than that one . 这个房间不如那个房间漂亮。 注意：“not as /so+形容词或副词原形+as” 可以与less / least +原级 +than 进行转换 如：It is not as/so warm today as yesterday. 今天不如昨天暖和。 He did not come as /so early as Wang Lin. 他不如王林来得早。 ;2、比较级（两者之间） 基本句型 (1) 两者相比: Which is+比较级,A or B? 如: Which is （大）, the sun or the moon? (2)比较级+ than. 如: Mike is （高） than John. (3)有of the two”, 用the+比较级. 如: Lucy is the more careful of the two. (4) 比较级前可用much/a lot //far/ a little /a bit/even/ any等修饰. 如: ( )This book is interesting than that one. A.much more B. more much C. least more D. more less The blouse I bought yesterday is a little less expensive. To play basketball is far more enjoyable to the boy. ;(5) 比较级+and+比较级,表“越来越……” It becomes hotter and hotter . (热) (6)“ the+比较级，the+比较级”,表“越……，越……” The （高）you stand, the （远） you will see. 练习： ( )Mike looks _____ than Paul, but they are of the same age. A. youngest B. the youngest C. younger D. very younger (