Those who turn back never reach the summit.回头的人永远到不 了最高峰! 八年级上册：Unit 1 Period2 一．单词学习 1. worse (bad 的比较级)更差,更糟,更坏 2. worst (bad 的最高级)最差,最糟,最坏 3. height 高,高度 4. weight 重量 5. Sec. (=second )第二 6. competition 竞赛,比赛;竟争 7. test 测试,考査 8. swimmer 游泳者 二．课文学习 Grammar We use comparatives than to compare two people or things. We usually add-er to short adjectives and use more with long adjectives to form comparatives She is shorter than I am My book is more interesting than his We use the superlatives to compare three or more people or things. We usually add-est to short adjectives and use most with long adjectives to form superlatives He is the tallest boy in our class This is the most expensive computer in the shop 三．语法解析 形容词的比较级和最高级 1. 形容词的比较级用于两个人或事物之间的比较，其结构如下： 主语+谓语动词（系动词）+形容词比较级+than+比较对象。 2. 形容词最高级的由用法： 形容词最高级用于三者或三者以上的人或物进行比较，其结构为： 主语+谓语动词（系动词）+the+形容词最高级+名词+表示范围的短语或从句。 3. 形容词的比较级和最高级是在形容词原级的基础上变化的，分为规则变化和不规则变化。 1). 规则变化 构成方式 原级 比较级 最高级 tall taller taller fast faster tallest large larger largest late later latest 重读闭音节双写尾辅音字 big bigger biggest 母，再加-er/-ester/-er/-estest hot hotter hottest happy happier happiest early earlier earliest important more important most important quickly more quickly most quickly 原级 比较级 最高级 good better best many more most bad worse worst little less least far farther/ further farthest/ furthest 一般结尾加-er/-ester/-er/-estest 以-er/-este 结尾的，只加-er/-estr/-er/-estst 以辅音字母+y 结尾的，把 y 变 i, 再加-er/-ester/-er/-estest 双音节或多音节词，在前面 加 more, most 2). 不规则变化 四．知识解析 知识点一 名词 height 的用法 教材原文 height 高，高度 height 为名词，可以作主语或宾语。如： The Three Gorges Dam is 185 metres in height. 三峡大坝高 185 米。 What's the height of Mount Qomolangma? 珠穆朗玛峰多高？ 拓展 high 作形容词，意为“高的”；也可以作副词，意为“高”。如： The building is very high 这座楼房非常高。 He jumped higher than me．他跳得比我高。 例 根据句意及汉语提示完成单词 The plane is_________（高的）in the sky. It is flying at a ________（高度）of three thousand meters. 知识点二 than 表比较和 more 构成的比较级的用法。 教材原文 My book is more interesting than his. 我的书比他的书有趣。 ( 1) than 意为“比”，用于人或事物之间的比较 than 用作介词时，后跟名词或人称代词的宾格；用作连词时， 后跟从句。如： The world's first computer were bigger than cars. 世界上第一台电脑比轿车还大。 The exam is easier than I expected. 这次考试比我预想的容易。 ( 2 )more interesting 是 interesting 的比较级。多音节词的比较级是在该词前面加 more。如： Health is more important than money. 健康比金钱重要。 拓展在比较级前面常加下列单词表示程度：much/far/a lot….“……得多”;a bit/a little...“……一点”;even"甚至， 更”。如： A second-er/-esthand car is much cheaper than a new one. 二手车比新车便宜多了。 This classroom is a little bigger than that one. 这个教室比那个教室大一点。 知识点三 形容词的比较级和最高级 1.形容词比较级的用法： 形容词的比较级用于两个人或事物之间的比较，其结构为“主语＋谓语动词（系动词）＋形容词比较级＋ than＋比较对象”。 The climate here is warmer than that in Shanghai. 这里的气候比上海的气候暖和。 例 1 单项选择 -er/-estMum, I'd like a cup of coffee. -er/-estDear, why not drink some water? It's _____________ than coffee. A. healthy B. healthier C. more healthier D. the healthiest 2．形容词最高级的用法： 形容词最高级用于三者或三者以上的人或物之间的比较，其结构为“主语＋谓语动词（系动词）+the＋形 容词最高级＋名词＋表示范围的短语或从句”。 She is the best student in her class. 她是班上最好的学生。 例 2 单项选择 Staying with families and friends is one of _________ things in the world. A. the happiest B. happier C. the happy D. happiest 3．形容词的比较级和最高级是在形容词原级的基础上进行变化的，分为规则变化和不规则变化： 例 3 单项选择 I felt much ___________ after I told the problems to my close friend. A. good B. well C. better D. best 随堂精练 一．根据句意用所给的汉语或单词的适当形式填空。 1. Don’t be afraid of the ___________________ (测试). Nothing to it! 2. If you want to win the ___________________ (竞赛), you have to study harder. 3. The doctor says he should lose ___________________ (weigh) right now. 4. I wondered the ___________________ (high) of the mountain. 5. This math problem is much ___________________ (easy). 6. The glass on the second shelf looks ___________________ (nice) of all. 7. Of the two girls I’m teaching , I find Nancy the ___________________ (clever). 8. Playing computer games is___________________ (interesting) of all the activities. 9. -er/-est-er/-est-er/-est Are you feeling better now? -er/-est-er/-est-er/-est No, I’m feeling even ______________ (bad) than before. 10. Tom wants to be a ___________________ (swim) when he grows up. 二、单项选择。 ( ) 11. This pair of shoes is too small. I’d like a ________ pair. A. smaller ( B. biggest C. bigger D. bigger ) 12. If you want to be thinner and healthier, you have to eat ___ food and do ___ exercise. A. fewer; less B. fewer; least C. less; more D. little; more ( ) 13. -er/-est-er/-est-er/-est How do you feel about the talk? -er/-est-er/-est-er/