小学英语动词的单三形式讲解第五次讲义-

1、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

2、 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

3、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.

4、 "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s,如:work-works live-lives make-makes2.以s,x,ch ,sh等结尾的单词加es , 如:miss-misses fix-fixesfinish-finishes teach-teaches3.以辅音字母加y结尾的单词,变y为i加es , 如:fly-flies4.以辅音字母加o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

5、play jumpswim runput singdance comeget havefly studyread writelook drinkeat 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 _(

6、be this ?9. Dogs _(be our friends .10. That blackboard _(be clean.11. The desk _(be Toms.12. Somebody _(do her homework .13. Everybody _(is ok!14. Nobody _ (be in the park .15. There _(besomeone in the classroom .16. That cat _(be mine .17. A little water _(be in the cup.18. Cheese _(tastewell .19.

7、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 . (Tom2. You need a pencil-box for new term . (Sams sister.3.I do my homework at half past four in the afternoon . (she.4. I have breakfast at twenty

8、-five past seven in the morning . (her father .5. I watch TV at quarter past six with my parents . (Toms sister.二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,sho

9、uld not,will not;3、上述都没有的,在动词前加助动词否定形式dont/doesnt/didnt。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

10、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 like