2016人教版英语八年级上Unit3课件第一课时.ppt

Unit 3 I’m more outgoing than my sister. 1a. Match each word with  its opposite! tall thin long hair quietly loudly short hair heavy short Listen and number the pairs of twins in the picture. 大多数形容词和副词有三个等级： 原级、比较级、最高级。 一、构成 1. 构成的不规则变化: eg. good / well – better – best bad / badly – worse – worst many / much – more – most little – less – least far – farther / further – farthest/ furthest 2. 构成的规则变化: 1) 单音节词和少数双音节词 一般在词尾后加-er 或-est. 如： cold – colder – coldest nice — nicer – nicest 2) 重读闭音节词末尾只有一个辅音字母 时, 先双写这个辅音字母, 再加-er或-est。 如: big – bigger – biggest thin – thinner – thinnest 3) 以“辅音字母+ y”结尾的双音节词， 先改y为i, 再加-er或-est。如： easy – easier – easiest happy – happier – happiest 4) 多音节词和部分双音节词在词 前加more或most。如： delicious – more delicious – most delicious interesting – more interesting – most interesting 二、用法 1.比较级表示两者 (人或事物) 的比较。 eg. I am taller than Tom. My dress is more beautiful than hers. 2. 最高级表示三者或三者以上 (人或事物 ) 的比较, 其中有一个在某一方面超过其他几个时, 用最高级。最高级的前面一般要加定冠词 the, 后面可带 of ( in )短语来说明比较的范围。 如： She is the youngest in the class. Jason is the tallest of the three. Whose handwriting is the best of all? 3.在形容词比较级前还可用much, even, still, a little 来修饰, 表示“……的多”, “甚至……”, “更……”, “……一些”。如： This city is much more beautiful than before. She’s a little more outgoing than me. It’s a little colder today. 4.“比较级＋and＋比较级”意为“越来越……” 。 多音节比较级用“more and more＋形容词原级”形式。 如： It’s getting worse and worse. The group became more and more popular. 5. “Which / Who is + 比较级…？” 比较A、B两事物, 问其中哪一个较……时 用此句型。如： Which T-shirt is nicer, this one or that one? Who is more active, Mary or Kate? Which one is more popular among students, going to concerts or going to movies? 6. 使用形容词比较级时需注意以下几点： 1) than后面接代词时, 一般要用主格形式， 但在口语中也可使用宾格形式。 如： My brother is taller than I / me. 2) 当需要表示一方超过另一方的程度时， 可以用much, a lot, a little, a bit, even,