一般现在时精讲821.doc

动词单数第三人称变化1. 一般情况加s2. 以-s, -x, -ch, -sh结尾 加 es3. 以辅音字母加o结尾，加es4. 特殊 have has; be is 一般现在时1概念：一般现在时表示经常的、习惯性的动作或存在的状态。 2构成：一般现在时的构成主要有两种形式： （1）be型：句子的谓语动词只有be（am，is或are）： a肯定句中，只出现be，如： I am a student我是一名学生。 b否定句中，要在be后面加not，如： She isnt a teacher她不是教师。 c一般疑问句，要将be放在句子开头（注意句首字母大写），句尾用问号，答语用Yes，主语+be或No，主语 + be + not如： Are you ready？你准备好了吗？ Yes，I am是的，我准备好了。 （No，Im not不，我没准备好。） （2）实义动词型：句中的谓语动词为实义动词（也叫行为动词）： a肯定句中，只出现实义动词，如： I get up in the morning我早晨起床。 b否定句中，要在实义动词前面加do（does）not，do（does）作助动词，本身无意义，常与not缩写成dont（doesnt），如： I dont like vegetables我不喜欢蔬菜。 c一般疑问句，要在句子开头加助动词Do（does），句尾用问号，简略答语用Yes，主语+do（does）或No，主语+do（does）not如： Do you like oranges？你喜欢桔子吗？ Yes，I do是的，我喜欢。 （No，I dont不，我不喜欢。） 一般现在时的用法1. 表示经常发生的动作、存在的状态或现阶段的习惯。常用的时间状语：often, sometimes, usually, always, seldom, in the morning, every day, on Sunday等。He is always ready to help others.The students have sports at five every afternoon.2. 表示不受时间限制的事实或普遍真理。Three plus two is five.A plane is faster than a car.China is in Asia.Light travels faster than sound.3. 在含时间或条件状语从句的复合句中，主句用一般将来时， 从句用现在一般现在时表示将来动作。I will stay at home if it rains tomorrow.Shell go to see him as soon as she arrives.When they come, theyll tell you something important.4. 在含宾语从句的复合句中,尽管主句用过去时态, 但是如果宾语从句表示的内容是客观真理,从句谓语动词仍用一般现在时.The teacher told her pupils that the sun rises in the east.5. 表示已安排或计划好将来必定会发生的动过或存在的状态，一般用be, come, go, arrive, leave, start等动词。My birthday falls on May 2.The meeting is at 2:00 p.m.His ship leaves at 9:00 a.m.6. 图片说明、电影说明、解说戏剧内容及场景等，动词常用一般现在时。Scene 1 (Mary and Miss Green are in the professors room- a large, pleasant room with many books. There is a big desk near the window.)7.有几个由here, there开头的句子，动词用一般现在时表示现在正在发生的动作。There goes the bell. Lets hurry.Here comes the teacher.一般现在时练习一、 写出下列动词的第三人称单数talk _ hope_stop_ play_say_buy_worry_fly_study_like_make_take_love_become_come_drive_shine_leave_wake_write_have_give_see_ let_swim_stop_shop_plan_get_sit_cut_run_forget_begin_wash_watch_finish_teach_fish_reach_go_do_二、用括号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 English 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) 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.21 We often _ (play) in the playground.22. He _ (get) up at six oclock.23. _ you _ (brush) your teeth every morning?24. What _ (do) he usually _ (do) after school?25. Danny _ (study) English, Chinese, math, science and art at school.三、按照要求改写句子1. Daniel watches TV every evening. (改为否定句)_2. I do my homework every day. (改为一般疑问句，并作否定回答)_3. She likes milk. (改为一般疑问句，并作肯定回答)_4. Amy likes playing computer games. (改为一般疑问句，并作否定回答)_5. We go to school every morning. (改为否定句)_6. He speaks English very well. (改为否定句)_7. I like taking photos in the park. (对划线部分提问)_8. John comes from Canada. (对划线部分提问)_9. She is always a good student. (改为一般疑问句，作否定回答)_10. Simon and Daniel like going skating. (改为否定句)11. Do you often play football after school? (肯定回答) _12. I have many books. （改为否定句）_13. Gao Shans sister likes playing table tennis.（改为否定句）_14. She lives in a small town near New York. （改为一般疑问句）_15. I watch TV every day. （改为一般疑问句）_16. David has got a goal. （改为一般疑问句）_17. We have four lessons.（改为否定句）_18. Nancy doesnt run fast. （改为肯定句）_19. My dog runs fast. 否定句：_一般疑问句：_20. Mike has two letters for him.一般疑问句