八年级unit3 section a 2.ppt

形容词或副词比较级的构成： 3. 重读闭音节词词尾只有一个辅音字母时，先双写辅音字母再+er 4. 以辅音字母+y结尾的单词，变y 为i+er 2. 以不发音的字母e结尾的+r 1. 一般在词尾+er 5. 多音节词和部分双音节词前加more tall -- taller nice -- nicer fat -- fatter funny -- funnier interesting – more interesting Li Weijia is _______ _____ (thin) Du Haitao. Du Haitao sings ______ _____ (good) Li Weijia. better than thinner than Gao Yuanyuan is as ________ (漂亮) as Sun Li. Sun Li works as _____ (努力) as Gao Yuanyuan. hard beautiful 1. 汤姆比萨姆更聪明吗？ Is Tom _______ ____ Sam? 2. 不是。萨姆比汤姆更聪明。 No, he isn’t. Sam is _______ _____ Tom. smarter than smarter than Complete the sentences according to the text. 3. 塔拉比蒂娜更外向吗？ Is Tara _____ ________ _____ Tina? 4. 不是。蒂娜比塔拉更外向。 No, she isn’t. Tina is ______ ________ _____ Tara. 5. 你和你姐姐一样友善吗？ ____ you ___ friendly ___ your sister? 6. 不是。我更友善一些。 No, I’m not. I’m _________. as as Are friendlier more outgoing than more outgoing than 7. 塔拉和蒂娜一样努力吗? Does Tara work ___ _____ ___ Tina? 8. 谁在学校更努力一些？ Who’s _____ _____________ at school? 9. 蒂娜认为她学习比我更努力。 Tina thinks she _____ ______ than me. as hard as more hard-working works harder 多数形容词和副词有三个等级：原级、比较级和最高级。本单元主要学习形容词、副词的原级和比较级的构成及其用法。 原级 形容词、副词的原级即原形。 1. 表示两者在某一方面相同 主语+ be / 行为动词+ as + 形容词 / 副词原形+ as +比较对象 e.g. This dress is as beautiful as that one. Linda sings as well as Amy. 2. 表示一方在某一方面不及另一方时 A+ be + not + as / so + 形容词原形+ as +B A+ don’t / doesn’t / didn’t + 行为动词原形+ as / so +副词原形+ as +B e.g. Tom isnt as / so tall as me. I dont sing as / so loudly as my sister. 3. 原级前可用very，quite，too等副词修饰。 e.g. Im very hungry. My sister runs quite fast. Its too hot here. 1) A + be + 形容词比较级 + than + B e.g. I’m more outgoing than you. 我比你更外向。 两者进行比较,表示“一方比另一方更……” 2) A + 实义动词 + 副词比较级 + than + B e.g. Tom jumps higher than Jack. 汤姆比鲍勃跳得更高。  比较级 3) 当询问两者中谁更 / 哪一个更 / 什么更……时，常用句型“Who / Which / What + be + 形容词比