初中英语形容词比较级讲解材料.ppt

形容词的比较级;教学目标： 1.初步认识形容词和副词； 2.会变化形容词和副词的比较级； 3.会简单运用形容词和副词的比较级。;形容词：作定语或表语： a beautiful girl a wonderful story The book is interesting. 副词：修饰动词 work hard play basketball well rain heavily;大多数形容词和副词有三个等级： 原级（原形）：tall outgoing 比较级 : taller more outgoing 最高级 : tallest most outgoing;原级用法： pretty / so / really / too/ quite / very 后 + 形容词原形 Eg. My parents are really (health). The boy is so (friend) . ;2. 同级比较 ： 当A与B在某一程度上一样 时，用同级比较 。（A与B在某方面一样） Eg. (1) 她像她妈妈一样高。 She is as tall as her mother . （2）Tom像Tim一样努力学习。 Tom studies as hard as Tim. 肯定结构：as + 形容词/副词原级 + as A + be动词 + as+ 形容词的原级+ as + B. A + 行为动词 + as+ 副词的原级+ as + B.;2. 同级比较 ： 当A与B在某一程度上不一样时，用同级比较 。（A在某方面不如B） Eg. (1) 我不如姐姐外向。 I’m not as outgoing as my sister . （2）他不如Tim跑得快。 He doesn’t run so fast as Tim. 否定结构：not as / so + 原级 + as A + be动词 + not+ as/so+ 形容词的原级+ as + B. A + don’t / doesn’t +动词原形 + as/so+ 副词的原级+ as + B.; 1.The room is as as that one. (大的) 2. English isn’t so as Chinese. (容易的) 3. The people here were very . (勤劳的) 4. Lily didn’t come as as Lucy.(早的) 5. She does homework as as me. (careful) ;形容词的比较级 1.单音节词在词尾加-er构成比较级 tall— taller young--younger long--longer short –shorter ;2.以字母e 结尾的词只加-r构成比较级。 nice --nicer fine --finer white --whiter late--later 3.重读闭音节以一个辅音字母结尾的，应先双写辅音字母，再加-er. big—bigger thin—thinner fat—fatter hot--hotter;4.以辅音字母加-y 结尾的词，先把-y变为 I， 再加-er. easy--easier funny—funnier early--earlier 5.双音节的词和部分双音节词，在词前加more beautiful—more beautiful interesting—more interesting ;6.不规则变化 good/well—better bad/badly/ill—worse many/much—more little—less far—farther --further old—older