1、1（七年级英语）一般现在时的讲解一、一般现在时定义：经常性、习惯性的动作或存在的状态。e.g. I go to school on foot. e.g.：He is very busy now. e.g.：She is ten. （她十岁了。 ） e.g.：Kate is in the classroom. （凯特在教室里。 ）e.g.: We often call to each other.（我们时常相互通信） 。表示主语现在的性格、特征、能力。e.g. He can swim. e.g.：I work hard. e.g.：I like watching TV.e.g.：I like E
2、nglish. We can speak English.表示客观真理。e.g. There are seven days in a week. e.g.：The moon moves round the earth.e.g.：The sun is bigger than the moon. （太阳比月亮大。 ）二、一般现在时的构成：1、当谓语动词是 be 动词 am, is ,are 时， 1）肯定句式 主语 am/ are/ is 其他。2）否定句式 主语 am/ are/ is not 其他。3）一般疑问句 Am/ Is/ Are 主语 其他？肯定回答 Yes, 主语（必须是代词） am
3、/ is/ are否定回答 No, 主语（必须是代词） am/ is/ are not（必须用缩写形式 isnt/arent）e.g.：Danny is a good student. Danny isnt a good student. Is Danny a good student?Yes, she is.No,she isnt.2、当谓语动词是行为动词（实义动词）时1）当主语是第一人称 (I / we) ; 第二人称 (you) 及第三人称复数 (they 及复数的名词)时：肯定句 主语 行为动词原形 其他否定句 主语 dont 行为动词原形 其他一般疑问句 Do 主语 行为动词原形 其
4、他肯定回答 Yes, 主语（必须是代词）do否定回答 No, 主语（必须是代词） donte.g.：They have lunch at 12:00. They dont have lunch at 12:00. Do they have lunch at 12:00?Yes, they do.No, they dont.22）当主语是第三人称单数 (she/ he/ it 及单数的名词) 时肯定句 主语 行为动词的单三形式 其他否定句 主语 doesnt 行为动词原形 其他一般疑问句 Does 主语 行为动词原形 其他肯定回答 Yes, 主语（必须是代词） does否定回答 No, 主语（必
5、须是代词） doesnte.g.：Jenny speaks English very well. Jenny doesnt speak English very well. Does Jenny speak English very well? Yes, she does.No, she doesnt.3.当谓语动词是情态动词+行为动词时：1）肯定句 主语 （情态动词 +行为动词原形） 其他2）否定句 主语 （情态动词 +not 行为动词原形） 其他3）一般疑问句 情态动词 主语 行为动词原形 其他？肯定回答 Yes, 主语（必须是代词）情态动词 否定回答 No, 主语（必须是代词）情态动词
6、+not（必须是缩写形式 cant, mustnt, shouldnt, neednt 等）e.g.：Tom can speak Chinese. 汤姆会说汉语。Tom cant speak Chinese. 汤姆不会说汉语。Can Tom speak Chinese? 汤姆会说汉语吗？Yes, he can.No, he cant.三动词第三人称单数词尾变化有三种形式：(1)一般动词在词尾加-s， -s 在清辅音后读s，在浊辅音或元音后读 z，ds 读dz，ts 读ts。如：helphelps ， knowknows，get gets，read reads(2)以字母 s，x，ch ，sh
7、或有些以 o 结尾的动词加 -es，-es 读iz。如：guessguesses，fix fixes，teach teaches ，washwashes注意：gogoes dodoes(3)以辅音字母+y 结尾的动词，先变 y 为 i，再加-es，-ies 读iz。如：carrycarries，fly flies注：在 playplays pleiz，saysayssez中，字母 y 前为元音字母，第三人称单数形式直接在动词后面加-s。(4)特殊词例外。如：be is ，havehas四、对 do 的理解例：We dont (not do) our homework in the aftern
8、oon.答案：dont do解析：do 是一个比较难理解的词，它有三个含义: a)是所有行为动词的总称；b)是助动词，3无实义；c)是一个具体的行为动词 “做，干” 。此句中给出的 do 指“做，干” ，not 指把此句变为否定句，故须在 do 前加助动词 dont。闯关练习I.用 be 的适当形式填空1.-How_ you? -I_ fine.2.I_ David,and my family name_ Green.3.-What color _ your clock? -It_ white.4.-What_ this in English?-It_ an apple.5.Toy_my br
9、other.David_my brother,too.They _ my brothers.6.Look!These_apple trees.7.We_ good students and you_ good teacher.8.My sister and my brother_ students.9.Five and three _ eight.10._your card number 5578?11.Where_ your pencils?12.Thses sweaters _ fifty dollars.13.How much _ his jacket?14.My brothers bi
10、rthday_ December 11th.15.When _ Kates birthday?II.将下面的句子变成一般疑问句并作出肯定及否定回答1. That is my football.2. Those are his books.43. Jim and Tom are good friends.4. My birthday is November 1st.5. His son is twelve years old.III.将下面的句子变成否定句1. His card is on the table.2. Thses are my parents.3. Bob and Tony are
11、 our friends.4. These things are five dollars.5. The girl is his sister.IV.划线提问1. Our teachers are in the classroom.2. The girls telephone number is 032-55746.3. Her pen is black.4. September 10th is Teachers Day.5. Thery are thirteen years old.6. The boy is fine.7. The old man is my grandfather.8.
12、These socks are five yuan.II.当谓语动词是实义动词时5闯关练习I 将下面的句子变成一般疑问句并作出肯定及否定回答1.I have a baseball.2.Meria likes apples very much.3.He plays Ping-pang every day.4.We watch TV in the evening.5.Mr Wang often buys lots of things.6.Janey and Mary go to school at 7:30.II. 将下面的句子变成否定句1.I need a bag for sport.2.He
13、wants to go to a movie.3.She often goes to see Beijing Opera.4.The girl has an egg for breakfast.5.We play basketball every day.6.My teacher knows my name.7.It sounds very interesting.III.划线提问1. He likes apples and milk for lunch.2. Mr.Liu plays Ping-pang every day.63. His sister wants to go to a mo
14、vie.4. We play basketball every day.IV.用所给词的适当形式填空1_ her sister _ (have) a tennis racket?2._ your friend _ (like) basketball?3.We _ (play) football every day.4.It_ (sound) very well.5.Jim _ (want) an orange.6. My mother _(watch)TV in the evening.7. _ you _ (like) English?8. Mike and Li Lei _ (not li
15、ke) eggs.9. What color_ your sister_ (like)?10. She _ (know) a little English.一般现在时用法专练: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_ wash_ 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
16、.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)
17、some water in the bottle.11. Mike _(like) cooking.712. 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 _
18、(watch) TV in the evening.19. Su Hai and Su Yang _(have) eight lessons this term.20. What day _(be) it today? Its Saturday21 who _(want) to go swimming?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，作否定回答) _3. She likes milk.(改为一般疑问句，作肯定回答)4. Amy likes
19、playing computer games.(改为一般疑问句，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
20、句) _四、选择( ) 1. _ you have a book?A. Do B. Are C. Is D. Have( )2. They _ on a farm.A. working B. is work C. work D. is worked ( )3. Does Peter like to watch TV?_. A. Yes, he like B. No, he doesnt C. Yes, hed like D. No, he likes( )4. She doesnt _ her homework in the afternoon.A. doing B. to do C. doe
21、s D. do( )5. How _ Mr. Brown _ to America?A. do,go B. is,go C. does,go D. does,goes8( )6. Wheres my camera? I_ it.A. am not finding B. am not seeing C. cant find D. cant look at( )7. How _ he go to work?He _ to work by bike.A. does ;go B. do;goes C. do ;go D. does;goes( )8. _ you usually late for school?No, _.A. Do ; I am B. Does ;not C. Are ; Im not D. Are ; I arent( )9. _ she _ home at six every day?A. Is , leave B. Does , leave C. Is , leaves D. Does , left( )10. Mr. Yang _ English this term.A. teaches our B. teaches us C. teachs us D. teach our
