英语语法和练习( 英语语法和练习(一)
、动词的第三人称单数形式(即三单式) (一) 动词的第三人称单数形式(即三单式)
一、.第三人称单数:
  1. 第三人称单数代词有:he, she, it。
  2. 指示代词 this, that 。
  3. 不 定 代 词 everyone, somebody, something, nobody, everything, everybody ,who 等。 单数可数名词。 Lucy, a cat, my book,
  4. 如: an orange, the bag 等。
  5. 不可数名词可被看作第三人称单数。
  6. 当数 字或字母作主语时,看作第三人称单数。 二、动词的第三人称单数形式的构成规则。 (和名词变复数一样)
  1)一般在动词词尾加 s; e.g. sing?sings dance dances like-- likes
  2) 以 s, x, o, sh, ch 结尾加 es; wash?washes watch?watches do-- does
  3) 末尾是辅音字母+y 动词,改 y 为 I,再加-es; carry?carries
  4)haves has am/ are is 三、一般现在时谓语动词的用法:
  1)be 动词:主语是第一人称用 am,第三人称单数用 is,其他用 are;
  2)一般动词: 主语是第三人称单数,动词词尾加 s 或 es.主语是其他人称 或复数时,动词要用原形。
练习: 练习:
一、用括号内的词的正确形式填空。
  1. He (like) watching TV.
  2. She ( have) lunch at twelve.
  3. It( look) like a cat.
  4. Han Mei (go) shopping with her mother.
  5. Beijing ( be) in China.
  6. Uncle Wang often(make) cakes.
  7. A horse (run) very fast.
  8. Everyone ( be) here.
  9. This (be) a pen.
  10. Those (be) cucumbers.
  11. There (be) some milk in the glass.
  12. There (be) some apples on the tree.
  13.My brother ( fly) a kite.
  14.You he and I ( come) from China
  15.Mr. White ( teach) us math.
  16. "6" (be) a lucky number.
  17.I ( sweep) the floor.
  18. He can ( ride) a horse.
  19.The children (play) football on the playground.
  20.Mr.Rice and Mrs. Rice (watch) TV at home.
  21.The girl in red (speak) English very well.
  22. I’ll (do) my homework.
  23. She’ll (go) to the zoo.
  24.There (be) a pen, a book and two rulers on the desk.
  25. There (be) two ruler, a pen and a book on the desk.
  26. Amy must (get) up now.
  27.My Chinese teacher (give) me a hand.
  28.They often (listen) to music.
1
(二)改写一般疑问句的方法: 改写一般疑问句的方法:

  1. 用 yes 或 no 回答的句子叫一般疑问句。
  2. 当句子中有 be(is,am,are,was,were), can, will, would, could, must, should 等词时,变一般疑问句将上述单词提到句首,第一人称变为第二人称, 等词时 some 要改为 any。e.g.:
  3.当句子中有行为动词 行为动词时,变一般疑问句要借助动词 Do/ Does/ Did 放在句 行为动词 首(即第三人称单数借 Does, 一般过去时借 Did, 动词原形的借 Do) ,第 一人称改为第二人称, 原来的动词 (即三单式和过去式) 要变回原形。 Some 要改为 any。
  4.祈使句 祈使句的一般疑问句在句首加 Will you….? 祈使句 e.g.: Open the door. Will you open the door? 但 let’s 引导的祈使句 引导的祈使句一般疑问句用 Shall we……? e.g.: Let’s go home. Shall we go home?
练习: 练习:
将下列的句子改为一般疑问句,并肯定、否定回答。
  1.I am very active.
  2. We are classmates.
  3. She is watering the flowers.
  4.I was a football player.
  5.There are some students here.
  6. This is a desk.
  7.These are goats.
  8.I can milk a cow.
  9.She can shear a sheep.
  10. It’ll be rainy tomorrow.
  11. I’ll come here early.
  12.You must hand in your homework.
  13.I’d like some beef.
  14. She’d like a hamburger.
  15.I could have some noodles.
  16. I like painting.
  17.She watches TV every day.
  18.Mike has math on Monday.
  19.They eat some peaches.
  20.Tom missed the bus this morning.
  21.Miss White had a cold yesterday.
  22.My science teacher often play with us.
  23.Let’s go shopping.
  24.Close the window.
  25.He can’t wash the plates.
  26. I know she is Amy.
2
(三)改否定句的方法: 改否定句的方法:

  1. 当句子中有 be(is,am,are,was,were), can, will, would, could, must, should 等词时,变否定句在上述单词后面加 not, some 要改为 any, and 要改 等词时 为 or, too 要改为 either。
  2. 当句子中有行为动词 行为动词时,变否定句在行为动词的前面加 don’t/ doesn’t/ 行为动词 行为动词的前面加 didn’t. (即第三人称单数借助动词 doesn’t, 一般过去式借助动词 didn’t, 动 词原形的借助动词 don’t) 原来的动词(即三单式和过去式)要变回原形。 Some 要改为 any,and 要改为 or, too 要改为 either.
  3.祈使句的否定在句首加 Don’t . 句首加 e.g.: Open the door. Don’t open the door. Be quiet! Don’t be quiet! 但 let 引导的祈使句在 let sb 后面加 not . (即 let sb not do sth) 在 e.g.:Let’s go home.-- Let’s not go home. Let me see. Let me not see.
练习: 练习:
将下列的句子改为否定句。
  1.This is an egg.
  2. These are onions.
  3.Miss Zhang and Miss Chen are our teachers.
  4.He was at home yesterday.
  5.There is some milk in the cup.
  6.I can sweep the floor and make the bed.
  7.She can use the chopsticks,too.
  8.I’ll go to Beijing.
  9.It’ll be snowy tomorrow.
  10. I could have some vegetables.
  11.I’d like some noodles for lunch.
  12. She’d like to eat a hot dog.
  13.He must clean the classroom.
  14. I run very fast.
  15.She studies English very well.
  16.Amy watches TV at home.
  17.My friends often play computer games.
  18.They go to school at 7:
  00.
  19.The dog eats bone and rice.
  20.I got a book from Amy.
  21.He made a kite.
  22. Mike won the ping-pong game.
  23.Please answer the phone .
  24. Be late for school.
  25.Let’s clean the board.
  26. Let him play in the street.(街道)
  27.I know he is from Canada.
  28.I think it’s going to rain.
3
(四)改特殊疑问句的方法(即划线提问) 改特殊疑问句的方法(即划线提问)

  1.句型结构: 特殊疑问词 一般疑问句 特殊疑问词+
  2.常用的疑问词: ① What 什么 (问东西、事情、干什么) ② What colour (问颜色) ③ What day (问星期) ④What time (问时间、几点钟) ⑤What’s the date?(问日期) ⑥What…like(问样子) ⑦How(问怎样、方式) ⑧How old (问年龄) ⑨How many+名词复数(问数量) ⑩How much +不可数名词(问数量)
  11.How much (问价格)
  12.How often (问次数、频率)
  13.How long (问长度、时间长短)
  14.Where (问地点、方位)
  15.When(问时间)
  16.Who(问谁(主格) ,提问主语时谓语动词要用三单式)
  17.Whom(问谁(宾格))
  18. Whose (问谁的(所有格))
  19.Which (问哪一个/一件/一只)
  20.Why(问原因(即为什么)回答用 because….)
练习: 练习:
划线提问。
  1.This is a pen.
  2. He’s Mr. Heart.
  3. His name is Gao Wei.
  4.The notebooks are on the desk.
  5. I’m fine.
  6. I’m five.
  7.We are from China.
  8. She comes from England.
  10.My mom is well.
  11.My grandpa is ill.
  9.It’s cloudy in Maoming.
  12.This is my book.
  13. These socks are my brother’s
  14.The bikes are ours.
  15. My dress is pink and white.
  17. It’s 7:15 now.
  18.It’s May 20th today.
  16.It’s Sunday today.
  19.My birthday is in June.
  20. We have English on Mondays.
  21.We have math and music on Fridays.
  22.She is active and funny.
  23.My sweater is 90yuan .
  24. I can see two birds in the tree.
  25. I have two pens.
  26. There are some sheep at the farm.
  27.I have a pair of sneakers.
  28.There is some bread on the plate.
  29.She often read books on Sunday.
  30.She can clean the window.
  31.Mr.Liu teaches us math.
  32. I play football with Tom.
  33.The girl in yellow in my classmate.
  34. I’d like some soup.
4
 

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