一般现在时的定义构成用法及练习题.docx
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1、一般现在时的定义构成用法及练习题 1. 一般现在时的概念 一般现在时表示经常的、习惯性的动作或存在的状态。 2. 一般现在时的构成 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
2、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 o
3、ranges?你喜欢桔子吗? Yes,I do.是的,我喜欢。 (No,I dont.不,我不喜欢。) 3.一般现在时的用法 1) 经常性或习惯性的动作,常与表示频度的时间状语连用,如: every, sometimes, at, on Sunday等。 I leave home for school at 7 every morning. 我每天早上7点去上学。 2) 客观真理,客观存在,科学事实。 The earth moves around the sun. 地球绕着太阳。 1 Shanghai lies in the east of China. 上海位于中国的东部。 3) 表示格言或
4、警句中。 Pride goes before a fall. 骄者必败。 注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。 例:Columbus proved that the earth is round. 4) 现在时刻的状态、能力、性格、个性。 Xiao Wang writes good English but does not speak well. 小王的英语书面表达能力比口语好。 比较:Now I put the sugar in the cup. I am doing my homework now. 第一句用一般现在时,用于操作演示或指导说明的示范
5、性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时 一般现在时的定义及构成 一般现在时表示现在经常反复发生的动作、存在的状态或习惯性的动作。 构成:主语+动词原形+宾语 一般现在时用行为动词的原形,但第三人称单数作主语时,动词要用第三人称单数形式。 He is out.(主语+be动词+副词) That pen is mine.(主语+be动词+代词) I am fifteen.(主语+be动词+数词) The bike
6、is under the tree.(主语+be动词+介词短语) Bdo型 do型由行为动词充当谓语,表示经常性或习惯性的动作,其构成为“主语+动词原形或动词第三人称单数形式”。如: I know it. He believes me. Cthere be型 there be型句子表示“存在”,其构成为“there be+主语+其他”,表示客观事实。用法遵循“就近原则”,即主语是单数或并列主语中的第一个主语是单数,则用there is;主语是复数或并列主语中的第一个主语是复数,则用there are。如: There is an eraser on the teachers desk.(主语a
7、n eraser是单数) There is an orange,five apples and eight bananas in the bag.(并列主语中的第一个主语an orange是单数) D情态动词型 情态动词型句子的构成为“主语+情态动词+动词原形”,情态动词和动词原形一起构成谓语,表示说话人对所叙述的动作或状态的看法。如: He can speak a little English.(can+speak) May I have a book, please?(may+have) 一般现在时的变化 否定形式:首先找句子中有没有be动词或情态动词,如果有,只要在be动词或情态动词后面
8、加上not。如果句子中没有be动词或情态动词那么根据主语在后面加入dont(you, I或者复数)或doesnt。 3 一般疑问句:首先找句子中有没有be动词或情态动词,如果有,只要将be动词或情态动词提前,放到主语前面。注意:句中第一人称和第二人称要互换。如果句子中没有be动词或情态动词那么根据主语判断加入do(you, I或者复数)或does。注意:句中第一人称和第二人称也要互换。 特殊疑问句:首先分析划线部分的意思,确定用哪个疑问词,然后找句子中有没有be动词或情态动词,如果有,只要将be动词或情态动词放到主语前面。如果句子中没有be动词或情态动词那么根据主语判断加入do(you, I或
9、者复数)或does。注意:句中第一人称和第二人称也要互换。 1. We often_(play) in the playgound. 2. He _(get) up at six oclock. 3. _you _(brush) your teeth every morning. 4. What (do) _he usually (do)_ after school? 5. Danny _(study) English,Chinese,Maths,Science and Art an school. 6. Mike sometimes _(go) to the park with his si
10、ster. 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? 10. What time_his mother_(do) the housework? 改句子 1. Do you often play football after school? (肯定回答) 2. I have many books. 3. Gao Shans sister likes p
11、laying table tennis 4. She lives in a small town near New York. 5. I watch TV every day. 6. David has got a goal. 7. We have four lessons. 8. Nancy doesnt run fast 4 9. My dog runs fast. 否定句: 一般疑问句: 10. Mike has two letters for him. 一般疑问句: 否定句: 11. I usually play football on Friday afternoon. 否定句: 一
12、般疑问句: 划线提问 12. Su Yang usually washes some clothes on Saturday. 否定句: 一般疑问句: 划线提问: 13. Mingming usually waters the flowers every day 否定句: 般疑问句: 划线提问 14. Tom does his homework at home. 否定句: 一般疑问句: 划线提问 一般现在时用法专练 .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) members of the
13、 Reading Club. 3. She and I a walk together every evening. 4. There (be) some water in the bottle. 5. We (not watch) TV on weekdays. 6. Nick (not do) his homework on Sundays. 7. they (like) the World Cup? 8. What they usually (do) on holidays? 9. your parents (read) newspapers every day? 10. The gir
14、l (teach) us English on Sundays. .按照要求改写句子。 5 1. Daniel watches TV every evening. (改为否定句) Daniel TV every evening. 2. I do my homework every day. (改为一般疑问句并作否定回答) you homework every day? No, I . 3. She likes milk. she milk? Yes, she . 4. Simon is from Beijing. (同义句改写) Simon Beijing. 5. Millie is clev
15、er at math. (同义句改写) Millie math. .改错。 1. Is you brother speak English? A B C ( ) 2. Does he looks like his father? A B C ( ) 3. He likes play games after class. A B C ( ) 4. Mr. Wu teachs us English. A B C ( ) 5.She doesnt her homework on Sundays. A B C ( ) .将下列句子译成英文。 1._桑迪放学后打羽毛球吗? 不.她学习很用功.放学后她总是
16、看书. _ Sandy badminton after school? No. She hard. She always books after school. 2.他在第三中学上学.他每天早上七点上学. He in No .3 Middle School. He to school at 7a.m.every day . 6 3.父亲早晨送我到学校. My father me to school in the morning. 4. 我女儿喜欢看电视和听音乐. My daughter TV and to music. 5. 西蒙朋友的姐姐长大后想当一位歌手. Simons friends s
17、ister to a singer when she up. 一般现在时用法专练(B) 1. 按要求改写下列句子. 1、Sandy has long hair in a ponytail. (改为一般疑问句并作肯定回答) Sandy long hair in a ponytail? Yes, . 2、Simon and Daniel are good friends .(改为否定句) Simon and Daniel _ good friends. 3、We are in the school football team. (改为一般疑问句并作肯定回答) you in the school f
18、ootball team? Yes, . 4、Amy likes playing computer games. (改为一般疑问句并作否定回答) _ Amy _ playing computer games? No, _ _. 5、We go to school every morning . (改为否定句) We _ _ to school every morning. 6、She is always ready to help others. (改为一般疑问句并作否定回答) _ she always ready to help others? No, _ _. 7、 The earth g
19、oes around the sun. (改为一般疑问句并作肯定回答) _ the earth _ around the sun? Yes, _ _. 8、He speaks English very well. (改为否定句) He _ speak English well. 9、John comes from Canada.(对划线部分提问) Where _John _ from? 10、I like taking my dog for a walk after supper. What _ you _ _ after supper?. 7 二. 改错 1. Lily and Lucy d
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