1、 大家都知道，在一般現(xiàn)在時(shí)中，當(dāng)主語(yǔ)是第三人稱單數(shù)時(shí)，謂語(yǔ)動(dòng)詞要用第三人稱單數(shù)形式，即常在動(dòng)詞原形后加-s或-es。但有些同學(xué)們對(duì)于哪些主語(yǔ)是第三人稱單數(shù)還不十分清楚，現(xiàn)歸納總結(jié)如下： 一、人稱代詞he, she, it是第三人稱單數(shù)。如： 1. He likes cars. 他喜歡車。 2.She goes to school at seven. 她七點(diǎn)去上學(xué)。 3. It has a good name. 它有一個(gè)好名字。 二、單個(gè)人名、親朋好友等稱呼作主語(yǔ) 是第三人稱單數(shù)。 如：1. Pat never throws rubbish on the floor. Pat從不在地板上扔垃圾。

2、 2. Miss Wang waters the flowers once a day. 王老師給花一天澆水一次。 3. Aunt Mary usually makes cakes. 瑪麗阿姨經(jīng)常做蛋糕。 4. My mother washes the dishes everyday. 我媽媽每天都洗碗。 三、第三人稱單數(shù)形式的構(gòu)成 1. 一般直接在詞尾加 s， 如：work-works live-lives make-makes 2. 以s, x, ch, sh等結(jié)尾的單詞加 es , 如： miss-misses fix-fixes finish-finishes teach-teache

3、s 3. 以輔音字母加o結(jié)尾的單詞，加 es 如: go-goes do-does 4,以輔音字母加y結(jié)尾的單詞,變y為i，再加es.如：study-studies 4. 特殊變形的有： have-has把下列動(dòng)詞變?yōu)榈谌朔Q單數(shù)形式。1. clean- 2. go- 3. have- 4. do- 5. play- 6. fly- 7. come- 8. cook- 9. watch- 10. study- 11. ask- 12. clean- 13. swim- 14. catch- 15. write- 16. eat- 17. make- 18. paint-cleansgoesha

4、sdoesplaysfliescomescookswatchespaintsmakeseatswritescatchesswimscleansasksstudies練習(xí)一、將括號(hào)里動(dòng)詞的適當(dāng)形式填入橫線上。 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 h

5、ome work once a day. (finish) 7. He _ rubbish in the classroom. (throw) 8.She _ rubbish on the floor. (throw)walkrunswashesbrushhangfinishthrowsthrows 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)

6、 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)throwsetrunssetswatercombwatchespacks 17. My mother _ dinner for me. (cook) 18. My parents _ the house at Chinese New Year

7、. (clean) 19. My teachers _ us some gifts. (give) 20. My friends _ the table with me. (set)cookscleangiveset練習(xí)二、選擇正確的單詞填到括號(hào)里。 1. What does Candy _ (wants,want) to be ? 2.You _ (should,shouldnt) be quiet in the library. 3. He shouldnt _ (throw,throws) rubbish on the floor. 4.Peter _ (help,helps) his

8、mother at home. 5.She never _ (run,runs) in the corridors. 6. We should _ (walks,walk) in the corridors. 7.He _ (dont,doesnt) get up early. 8.How often _ (do,does) your father go to bed?練習(xí)三、將下列句子改成第三人稱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 u