新目标英语人教版七年级上册一般现在时讲解和练习.doc

一般现在时讲解一、定义与讲解一般现在时：表示经常性的事情，经常性的动作或一般性事实。时间状语：often 经常，usually通常，always 总是，every每个，sometimes 有时，at 在几点钟只有在第三人称单数用动词的“三单变化”，其他用动词的原形。三单变化：1.（1）直接在动词词尾加-s ask-asks work-works2）以字母s, x, ch, sh或o结尾的动词，在词尾直接加-eswatch-watches wish-wishes fix-fixes do-does go-goes （3）以“辅音字母加 - y”结尾的动词，要先变y为i再加-es. try-tries study-studies cry-cries fly-flies2.不规则变化：be- is are have-has二、一般现在时用法1. 表示经常性，习惯性,永久性的动作或存在的状态.通常与副词sometimes, often, usually, always, every day (year, month ), once (twice, three times) a day,等时间状语连用。They usually go to school by bike.I take the medicine three times a day.She helps her mother once a week.2. 表示客观真理，科学原理，自然现象，等客观事实或格言，谚语等。 The sun rises in the east and sets in the west every day.三、一般现在时的句子转换：（1）当句子中有be动词或情态动词时，则把be动词或情态动词(can,could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句.例：陈述句：She is a student. 疑问句 Is she a student? 否定句 She is not a student.陈述句：I can swim.疑问句 Can you swim否定句 I can not swim.（2） 当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do (you,以及复数), does（单数she,he,it）变成问句；在主语后谓语动词前加助动词dont（I,you,以及复数), doesnt（单数she,he,it）变成否定句，助动词后的动词要变成动词原形。例：陈述句：We get up at 7:00 every morning.疑问句Do you get up at 7:00 every morning?否定句We dont get up at 7:00 every morning.陈述句：She has a little brother.疑问句 Does she have a little brother?否定句 She doesnt have a little brother赞同一般现在时练习一、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. 26. Mike sometimes _ (go) to the park with his sister.27. At eight at night, she _ (watch) TV with her parents.）28. _ Mike _ (read) English every day?29. How many lessons _ your classmate _ (have) on Monday? 30.What time _ his mother _ (do) the housework?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. We go to school every morning.(改为否定句) _5. He speaks English very well.(改为否定句) _6. I like taking photos in the park.(对划线部分提问)_7. John comes from Canada.(对划线部分提问)_9. Simon and Daniel like going skating.(改为否定句_10. Do you often play football after school? (肯定回答) _11. I have many books. （改为否定句）_12. Gao Shans sister likes playing table tennis.（改为否定句）_13. She lives in a small town near New York. （改为一般疑问句）_14. I watch TV every day. （改为一般疑问句）_15. David has got a goal. （改为一般疑问句）_16. We have fo