动词第三人称单数及练习.doc

Unit5 和Unit6语法的总结和练习（一）第三人称都有哪些词呢？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（实意动词）要用第三人称单数形式，即常在动词原形后加-s或-es或是变y为i加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：（注意句中动词的变化）1. He likes cars. 他喜欢车。2. She goes to school at seven. 她七点去上学。3. It has a good name. 它有一个好名字。 二、单个人名、亲朋好友等称呼作主语 是第三人称单数。如：（注意句中动词的变化）1. Pat never throws rubbish on the floor. Pat从不在地板上扔垃圾。2. Miss Wang waters the flowers once a day. 王老师给花一天浇水一次。3. Aunt Mary usually makes cakes. 玛丽阿姨经常做蛋糕。4. My mother washes the dishes everyday. 我妈妈每天都洗碗。（二）动词的第三人称单数？动词第三人称单数形式的构成：动词怎样变成第三人称单数呢？改变后怎样读？动词原形变第三人称单数的规则与发音规律同名词单数变复数大致相同。1. 大多数动词在词尾加“s”在清辅音后发音为s，在浊辅音及元音后发音为 z。如： stopstops s ; makemakes s readreads z ; 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 z； carrycarries z studystudies z; worryworries3. 以“s, x, ch, sh”结尾的，在词尾加“es”，发音为iz 如： teachteaches iz; watchwatches iz4. 以“o”结尾的动词，加“es”，读z 如： gogoes z dodoes z下面几个动词变为单数时，原词的元音部分的发音发生了较大的变化，请注意记忆。 如：1、do du:does daz2、say seisays sez以不发音字母“e”结尾的开音节词，如果尾音是s，z时，加“s”后字母“e”发音， 与所加“s”一起读做iz。 如： closecloses iz除上述规律外，还应注意下面：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。（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）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）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. (run)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 once 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. (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. 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 _ (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 carefully.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)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 you 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