一般现在时的结构：
主语不是三单： 主语 + 动词原形
主语是三单： 主语 + 动词三单形式（-es,-s结尾，） 注：三单：单个人或物或地方等（I， you除外） We usually walk to school. 我们经常走路上学。 She usually walks to school. 她经常走路上学。
口诀：一般现在时, 不是三单用原形，是三单就加s，es。
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动词三单形式变化规则 1) 一般情况：加-s work—works
2) 以s, x, z, sh, ch或o结尾: 加-es pass—passes, push—pushes, catch—catches, go--goes
3) 以辅音字母+y结尾： 改y为i，加-es（辅音字母是：a，e, i, o, u以外的字母） fly—flies 4) 不规则变化 have--has 口诀：
一般现在时，三单s/es，其他无变化，具体规则要牢记：1）直接加s 2）以s，x，ch，sh，o结尾+es 3）辅+y，变y为i，+es 4）特殊情况特殊记，have变has。
练习题：
用所给词的正确形式填空
1. We often___________(play) on the playground. 2. He _________(get) up at six o’clock.
3. __________you _________(brush) your teeth every morning. 4. What____ (do) he usually _____(do) after school?
5. Danny _______(study) English, Chinese, Maths, Science and Art at school.
6. Mike sometimes __________(go) to the park with his sister. 7. At eight at night, she ________(watch) TV with his parents. 8. ________ Mike________(read) English every day?
9. How many lessons ______your classmate____(have) on Monday?
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10. What time ____his mother_________(do) the housework? 11. He often ______(have) dinner at home. Daniel and Tommy___ (be) in Class One. 13. We____ (not watch) TV on Monday.
14. Nick _____(not go) to the zoo on Sunday. 15. They______ (like) the World Cup?
What ____they often ____(do) on Saturdays
17. Your parents________ (read) newspapers every day? 18. The girl______ (teach) us English on Sundays.
19. She and I _______(take) a walk together every evening. 20. There_______ (be) some water in the bottle. Mike ______(like) cooking.
22. They_______ (have) the same hobby.
My aunt______ (look) after her baby carefully. 24. You always____ (do) your homework well. I_____ (be) ill. I’m staying in bed.
26. She_____ (go) to school from Monday to Friday. 27. Liu Tao _____(do) not like PE.
28. The child often______ (watch) TV in the evening.
29. Su Hai and Su Yang ______(have) eight lessons this term. 30. －What day ______(be) it today? － It’s Saturday. 31. Don’t make a noise. Grandpa __________(sleep). 32. Tom’s family__________(watch) TV.
33. It ________(take) me two hours to finish my homework last night.
34. What ______ your mother _______(do) every evening? She _______(wash) clothes.
35. _______ it ______ (rain)every day? 36. What _______(do) you _______ on Sundays ? We ________ (play) football.
37. There ________ (be) a football match on TV every morning. 38. They often ________ (visit) the Great Wall. 39. Who _______ (dance) the best in your class? 40. He _____________ (not come).
41. The earth __________ (move) round the sun. 42 She ________ (buy) a sweater.
43. Mr. Wang often______( go) to Shanghai.
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