小学英语动词的单三形式讲解第五次讲义

四年级英语下册第五次讲义 一 小学英语动词的单三形式讲解 大家都知道 在一般现在时中 当主语是第三人称单数时 谓语动词 要用第三人称单数形式 即常在动词原形后加 s 或 es 但有些同学们对 于哪些主语是第三人称单数还不十分清楚 现归纳总结如下 一 人称代词 he she it 是第三人称单数 如 He likes watching TV 他喜欢看电视 She has lunch at twelve 她十二点吃午餐 It looks like a cat 它看起来像只猫 二 单个人名 地名或称呼作主语 是第三人称单数 如 Han Mei looks like her mother 韩梅看起来像她的母亲 Beijing is in China 北京在中国 Uncle Wang often makes cakes 王叔叔经常做蛋糕 三 单数可数名词或 this that the 单数可数名词 作主语时 是第 三人称单数 如 A horse is a useful animal 马是有用的动物 This book is yours 这本书是你的 That car is red 那辆小汽车是红色的 The cat is Lucy s 这只猫是露茜的 四 不定代词 someone somebody nobody everything something 等 及指示代词 this that 作主语时 是第三人称单数 如 Everyone is here 大家到齐了 There is something wrong with the watch 这块手表有毛病 This is a pen 这是一支钢笔 That is an eraser 那是一块橡皮擦 五 不可数名词作主语时为第三人称单数 如 The milk is in the glass 牛奶在玻璃杯里 The bread is very small 那面包很小 六 当数字或字母作主语时 看作第三人称单数 如 6 is a lucky number 6 是个吉利数字 I is a letter I 是个字母 第三人称单数形式的构成 1 一般直接在词尾加一般直接在词尾加 s 如 work works live lives make makes 2 以以 s x ch sh 等结尾的单词加等结尾的单词加 es 如 miss misses fix fixes finish finishes teach teaches 3 以辅音字母加以辅音字母加 y 结尾的单词结尾的单词 变 y 为 i 加 es 如 fly flies 4 以辅音字母加以辅音字母加 o 结尾的单词结尾的单词 加 es 如 go goes do does 动词单三的练习三 写出下列动词的第三人称单数 go do play jump swim run put sing dance come get have fly study read write look drink eat walk 一 根据括号里单词的适当形式填空 1 She be a writer 2 It look like a monkey 3 We go to the park 4 He go to school 5 Amy like eating fruits 6 Hebei be next to Shandong 7 Our teacher be talking with John 8 Whose book be this 9 Dogs be our friends 10 That blackboard be clean 11 The desk be Tom s 12 Somebody do her homework 13 Everybody is ok 14 Nobody be in the park 15 There be someone in the classroom 16 That cat be mine 17 A little water be in the cup 18 Cheese taste well 19 The letter O look like zero 20 4 be a bad number in China 二 把下列句子改成第三人称单数句的肯定句 否定句 一般疑问句 并 做回答 1 I like playing the pinao in the music room Tom 2 You need a pencil box for new term Sam s sister 3 I do my homework at half past four in the afternoon she 4 I have breakfast at twenty five past seven in the morning her father 5 I watch TV at quarter past six with my parents Tom s sister 二二 小学英语所有句型转换的方法小学英语所有句型转换的方法 基本助动词只有三个 be do have 他们没有词汇意义 只有语法作 用 如协助构成进行体 完成体 被动态 否定句 疑问句等 一 肯定句改否定句的方法 一步法 1 在 be 动词后加 not 如 is not are not am not was not were not 2 在 can should will 等后加 not 如 cannot should not will not 3 上述都没有的 在动词前加助动词否定形式 don t doesn t didn t 4 some 改成 any 二 肯定句改一般疑问句的方法 三步法 1 把 be 动词放在句首 剩下的照抄 some 改成 any my 改成 your 等 句点改成问号 2 把 can shall will 等放到句首 剩下的照抄 some 改成 any my 改成 your 等 句点改成问号 例如 陈述句 They are in the park He can play the guitar 一般疑问句 Are they in the park Can he play the guitar 把下列句子变成一般疑问句 1 I am listening to music 2 Mike is a student 3 Sarah can clean the classroom 4 They are in the zoo 5 There are some flowers in the vase 6 This is my sister 7 We are sweeping the floor 3 上述都没有的 在句首请助动词 Do Does Did 帮忙 剩下的照抄 some 改成 any my 改成 your 等 句点改成问号 例如 陈述句 I like the ducks He likes the dogs 一般疑问句 Do you like the ducks Does he like the dogs 把下列句子改为一般疑问句 1 We need some masks 2 They