1、一般现在时中的第三人称单数形式在一般现在时中，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。（一） 什么是一般现在时？一般现在时的基本用法有哪些呢？【一般现在时的功能】1.表示事物或人物的特征、状态。如：The sky is blue.天空是蓝色的。2.表示经常性或习惯性的动作。如：I get up at six every day.我每天六点起床。3.表示客观现实。如：The earth goes around the sun.地球绕着太阳转。（二）哪些主语是第三人称单数? 现归纳总结如下：一、人称代词 he, she, it是第三人称单数。如：He
2、 likes watching TV. 他喜欢看电视。he 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。标志词（时间状语）： always, every week (day, year, month), once a week, every, sometime
3、s, at, on Sunday uauslly often,never,hardly.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 Lucys. 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：Ever
4、yone 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。除上述规律外，还应注意下面三
5、点：1. 动词 have ，遇到主语是第三人称单数时，要用 has； 动词 be 的第三人称单数形式是 is。2. 含有动词第三人称单数形式的句子变否定句时，要用 doesnt + 动词原形，如：He goes to school at six in the morning. (变否定句) He doesnt go to school at six in the morning.3. 对含有动词第三人称单数形式的句子提问时，要用助动词 does，如：She goes home at five every day. (对划线部分提问) When / What time does she go h
6、ome every day? （三）含有动词第三人称单数形式的句子变否定句和疑问时怎样变？【注意：】只要句子中出现 do, does,dont,doesnt, 句子中原来的实意动词要用原形 例如：He likes apples. (改成否定句)He doesnt likes apples。(错)He doesnt like apples。(对)A 否定句：（1）当主语是第一，二或复数时，主语+ dont +动词原形(+其它)。如：I dont like bread.（2） 当主语为第三人称单数时，要用 doesnt构成否定句。如：He doesnt often play.B 一般疑问句：（1）
7、当主语是第一，二或复数时，Do +主语+动词原形+其它。如： Do you often play football?- Yes, I do. / No, I dont.(2) 当主语为第三人称单数时，要用 does构成一般疑问句。如：- Does she go to work by bike?- Yes, she does. / No, she doesnt.C特殊疑问句：疑问词+一般疑问句。如：How does your father go to work?（四）一般现在时-动词第三人称单数形式构成规则（一般现在时中主语时第三人称1、大多数动词在词尾加“S”如：stopstops makem
8、akes readreads playplays z2、以辅音字母加“y”结尾的，要先将“y”变为“i”，然后在加“es”读iz 如：flyflies carrycarries studystudies worryworries3、以“s, x, ch, sh”结尾的，在词尾加“es”，发音为如：teachteaches watchwatches 4、以“o”结尾的动词，加“es”，如：gogoes dodoes 5、以不发音字母“e”结尾的开音节词，加“s” 如： closecloses iz6、特殊：. be动词包括：am， is， are。第三人称单数用 is；过去式为 was；复数用
9、are，过去式为 1were. . 动词 have ，遇到主语是第三人称单数时，要用 has； 动词 be 的第三人称单数形式 2is。（五）巩固练习题：一、 写出下列动词的第三人称单数形式：sit- guess- die- go-rush- reach- touch- brush-fly- copy- say- run- do- fix- live- cry-enjoy- have- wish- play-Tie- teach- buy- study- drink- go- stay- make-look- carry- come- watch- plant- fly - do- 二、用括号
10、内动词的适当形式填空。1. He often _(have) dinner at home.2. Daniel and Tommy _(be) in Class One.3. We _(not watch) TV on Monday.4. Nick _(not go) to the zoo on Sunday.5. _ they _(like) the World Cup?6. What _they often _(do) on Saturdays?7. _ your parents _(read) newspapers every day?8. The girl _(teach) us En
11、glish on Sundays.9. She and I _(take) a walk together every evening.10. There _(be) some water in the bottle.11. Mike _(like) cooking.12. They _(have) the same hobby.13. My aunt _(look) after her baby carefully.14. You always _(do) your homework well.15. I _(be) ill. Im staying in bed.16. She _(go)
12、to school from Monday to Friday.17. Liu Tao _(do) not like PE.18. The child often _(watch) TV in the evening.19. Su Hai and Su Yang _(have) eight lessons this term.20. What day _(be) it today? Its Saturday三、改错(划出错误的地方，将正确的写在横线上 )1. Is your brother speak English? _2. Does he likes going fishing? _3.
13、He likes play games after class. _4. Mr. Wu teachs us English. _5. She dont do her homework on Sundays. _练习题练习一、 写出下列动词的第三人称单数drink_go_stay_make_look_have_pass_carry_come_watch_plant_fly_study_brush_do_teach_meet_bring_ 练习二、将括号里动词的适当形式填入横线上。1. I _ in the corridors. (walk)2. He _ in the corridors. (r
14、un)3. She _ her face once a day. (wash)4. They _ their teeth once a day. (brush)5. You _ up your clothes once a day. (hang)6. We _ our home work once a day. (finish)7. He _ rubbish in the classroom. (throw)8. She _ rubbish on the floor. (throw)9. I _ rubbish in the bin. (throw)10. They _ the table o
15、nce a day. (set)11. Peter never _ in the corridors. (run)12. Mary usually _ the table. (set)13. Pat and Ken _ the plants in the morning. (water)14. The boy _ his hair once a day. (comb)15. Miss Cheng _ TV at home. (watch)16. My sister _ his schoolbag once a day. (pack)17. My mother _ dinner for me.
16、(cook)18. My parents _ the house at Chinese New Year. (clean)19. My teachers _ us some gifts. (give)20. My friends _ the table with me. (set)练习三、选择正确的单词填到括号里。1. What does Candy _ (wants, want) to be?2. He shouldnt _ (throw, throws) rubbish on the floor.3. Peter _ (help, helps) his mother at home.4.
17、She never _ (run, runs) in the corridors.5. We should _ (walks, walk) in the corridors.6. He _ (dont, doesnt) get up early.7. How often _ (do, does) your father go to bed? 8. We _ (not watch) TV on Monday.9. Nick _ (not go) to the zoo on Sunday.10._they _ (like) the World Cup?11. What _they often _
18、(do) on Saturdays?12._your parents_ (read) newspapers every day?13. The girl _ (teach) us English on Sundays.14. She and I _ (take) a walk together every evening.15. There _ (be) some water in the bottle.16. Mike _ (like) cooking.17. They _ (have) the same hobby.18. My aunt _ (look) after her baby c
19、arefully.19. You always _ (do) your homework well.20. I _ (be) ill. Im staying in bed.21. She _ (go) to school from Monday to Friday.22. Liu Tao _ (do) not like PE.23. The child often _ (watch) TV in the evening.24. Su Hai and Su Yang _ (have) eight lessons this term.25. He_ TV every evening. (watch
20、)26. John _ like his father. (look)27. He often _(have) dinner at home.练习四、将下列句子改成第三人称 He的句型（看例句）例句：I brush my teeth once a day. - 改：He brushes his teeth once a day.1. I comb my hair twice a day._2. They go to school at six in the morning._3. You wash your face and put on your clothes._4. When do yo
21、u get up?_5. How often do you hang up your clothes?_练习五、 句型转换1. I go to school by bus. (用 He做主语)_2. Kim plays baseball very well. (变一般疑问句)_3. She plays sports every day. (变否定句)_4. David doesnt like French. （变肯定句）_5. They like watches. (变否定句)_6. Alan doesnt watch TV in the evening. （变肯定句）_7. We have time to do it. (变否定句)_8. John has a car. （改成疑问句）_ 9. Do you have a pencil? (把主语改成 she) _10. Sonia Hall likes hamburgers. (变成否定)_
