Unit 2 语法知识课件 2023-2024学年仁爱科普版七年级英语上册

Unit 2 Looking Different - 语法知识精讲 动原和三单 -动词原形和动词第三人称单数形式 I often play football. We go home on foot. You have a pet dog. He loves pigs. She usually plays games at home. It doesn’t eat potatoes. They always watch TV at home. 动词 v( verb. )-表动作 I often play football. We go home on foot. You have a pet dog. They always watch TV at home. Candy and Judy love you. V原 (动词原型) 1.主语是第一,二人称,复数人称 I, You,We, They, 两个以上的人物做主语。 用法 He loves pigs. She usually plays games at home. It has two big eyes. Tom likes bananas. 三单 -(动词的第三人单数形式) 主语是第三人称 He, She,It, 单个人物做主语。 实义动词变第三人称单数的规则 ① 一般情况直接加“s”, 如:come-comes,meet-meets ② 动词以o,s,sh,ch, x结尾,加“es”, 如:do-does; go-goes; teach-teaches ③ 以辅音字母+y结尾,变y为i,再加es, 如:study-studies, fly-flies, try-tries ④ 特殊情况:have-has 适用于一般现在时 用动词的适当形式填空 1. I often _(go) to school on foot. 2. He usually _ ( work) at home. 3. Amy _(want) to play games. 4. We _( have ) some apples. 5. Mike always_( watch)TV on Sunday. go works wants have watches 句型转换-需添加助动词完成转换 I like singing. I don’t like singing . Do you like singing ? Yes,I do. No,I don’t. He has a small nose. He doesn’t have a small nose. Does he have a small nose ? Yes,he does. No,he doesn’t. 否定句 一般疑问句 助动词 帮助动词的词,本身没有实际意义 do don’t does doesn’t did didn’t 过去式 帮助动词 1. 动词变否定 They have long noses.-They don’t have long noses. 2.动词变疑问句 Mike goes to the park by bus. Does Mike go to the park by bus? How does Mike go to the park? 助动词后面的动词永远是原形 句型转换 1. She loves eating cakes. 否定句:_ 一般疑问句:_ 2.We have lunch at school. 一般疑问句:_ 肯定回答:_ She doesn’t love eat cakes. Does she love eating cakes? Do you have lunch at school? Yes, we do. 表示所属关系 物主代词 名词所有格 形容词性物主代词 名词性物主代词 有生命 无生命 第一人称 第二人称 第三人称 单数 复数 单数 复数 单数 复数 形容词性物主代词 名词性物主代词 my our your your his her its their mine ours yours yours his hers its theirs Whose candies are they? They are my candies. They are mine. mine = my candies. Whose hat is it? It is her hat. It is hers. her = her hat. 名词性物主代词=形容词性物主代词+名词 This is her banana. The banana is hers. These are their pears. Thesepears are