Unit 3 My Younger SisterLesson Three（一）大声读单词：1. smart adj. 聪明的2. butterfly n. 蝴蝶3. more adv. 更加4. early adj. / adv. 早5. pizza n. 意大利饼（二） 语法提示：一般现在时态：定义：第一人称，第二人称，第三人称复数肯定形式否定形式I like pizza. I dont like pizza.We like cooking. We dont like cooking.You have an English book. You dont have an English book. You have some books. You dont have some books. They go to school at seven. They dont go to school at seven. 第三人称单数肯定形式否定形式She likes English.She doesnt like English. He has a pear. He doesnt have a pear.It looks good. It doesnt look good. 注意：缩写形式 do not = dont does not = doesnt 动词第三人称的特殊变化 havehas，studystudies 形容词比较级：句形变化1. A + be + 形容词比较级 + than B Nancy is taller than Lucy. Boys are shorter than girls. 词形变化规则变化：直接加 er 例如： tall taller特殊：1. 哑e ，去e 加er nice nicer 2. 辅y ，变y为i加er happy happier , funny funnier , early earlier 3. 一辅重读闭音节，双写尾字母，再加er hot hotter 4. 多音节单词加 more beautiful more beautiful5. 特殊不规则变化good better