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1、七年级上册英语语法知识及习题 定冠词的用法1) 用于指谈话双方都知道的人或事物 Open the door, please. 请把门打开。2) 用以复述上文提过的人或事物（第一次提到用“a或an”，以后再次提到用“the”） I have a pencil , the pencil is green . 我有一支铅笔，这支铅笔是绿色的。 3) 用在序数词前 January is the first month of the year. 一月份是一年当中的第一个月。 4) 表示世界上宇宙中独一无二的事物 the sun 太阳 the moon 月亮 the earth 地球 the sky 天空
2、 the world 世界5) 表示演奏乐器时，乐器的前面要加the play the piano 弹钢琴 play the violin 拉小提琴 零冠词的用法 1) 专有名词前一般不加冠词 Tom 汤姆 China 中国 Europe 欧洲 2) 月份、周日、节日前一般不加冠词 January 一月份 Sunday 星期日 Christmas Day 圣诞节 Thanksgiving 感恩节National Day 国庆节 May Day 劳动节 比较： .on a Sunday morning. 在一个星期天的早晨. （表示某一个。） 3）三餐、四季前一般不加冠词 I have lunc
3、h at school. 我在学校吃午餐。 4）球类运动不加冠词play basketball 打篮球 play volleyball 打排球 play football 踢足球 时态概说 在英语中，不同时间发生的动作或存在的状态，要用不同的动词形式来表示，这种动词的不同形式称为时态。 I am 14 this year. 今年我14 岁。 I was 13 last year.去年我13 岁。 He plays soccer every day.他每天都踢足球。 He played soccer yesterday.昨天他踢足球了。 英语中共有16 种时态，常用的有9种。一般现在时 一般现在
4、时表示现在的状态，如：He is 12. She is at home. 表示经常的或习惯性的动作， 如：I go to school at 7:30 every day. 表示主语具备的性格和能力等，如：She likes apples. They know English.动词的种类动词分为四种：连系动词, 实义动词, 助动词, 情态动词1）连系动词：词义不完全，要和后面的表语一块构成谓语。如 be (am, is are)是，sound听起来，look看起来 She is my sister.That sounds interesting .听起来很有趣。2）实义动词，有实际意义的动词，
5、能单独做谓语。如 see, ask, like I like bananas.3）助动词：本身没有词义，帮助实义动词一起构成否定句，疑问句。如 do，doesI dont like chicken .Does he like apples ?4）情态动词；本身具有一定意义，但不能单独作谓语，必须和实义动词一起构成谓语。can,能，会，must ,必须，情态动词后一定要用动词原形。I can speak English .I must find it . 我一定要找到它动词be的用法be 的用法口诀我用am，你用are，is连着他，她，它；单数名词用is，复数名词全用are。变疑问，往前提，句末
6、问号莫丢弃。变否定，更容易，be后not莫忘记。疑问否定任你变，句首大写莫迟疑。Be动词专项练习 用am,is,are填空：1. I_astudent._youastudent?No,I_not. 2.Thegirl_Jackssister. 3.Thedog_tallandfat. 4.Theman _ateacher. 5._yourbrotherintheclassroom? 6.Where_yourmother?She_athome. 7.How_yourfather? 8.Jane and Tom _ my friends 9. Where _ my pen ?10. Where _
7、 my books ?11.That_myredskirt. 12.Who_I? 13. Thejeans_onthedesk. 14. Here_aphoto of my family . 15.Here_somesweatersforyou. 16.Theblackbook_forSuYang. 17.Thispairofsocks_20 dollars.18.Thetwocupsofmilk_forme. 19.Sometea_intheglass. 20. How much _ the skirt?21 How much _ the trousers ?22. Mysistersnam
8、e_Nancy.23._DavidandHelenfromEngland? 24.There_agirlintheroom. 25.You,heandI_fromChina. 句型转换的方法一.肯定句变否定句1.句子中有be，在be后加not。) I am a student. I am not a student.2) They are blue . They arent blue.3) He is Tom. He isnt Tom 2.谓语是动词原形，在动词前加dont。) I have a book . I dont have a book.2) They like Chinese .
9、They dont like Chinese.3) We come from China. We dont come from China.3谓语动词是第三人称单数，在动词前加doesnt，动词用原形。1)She has a basketball. She doesnt have a basketball2)Maria likes China. Maria doesnt like China.3)Jane comes from the U.S.A. Jane doesnt come from the U.S.A.练习：将下列句子变成否定句。1. I am a teacher. I _ a te
10、acher.2. We are students. We _ students.3. Jane is a girl. Jane _ a girl.4. They like English. They _ like Chinese5. I come from China. I _ come from China.6. He likes Chinese. He_ like Chinese.7. Maria comes from Cuba. Maria_ come from Cuba.8. We know Maria. We _ know Maria二.肯定句变一般疑问句句子中有be，把be提到句首
11、1) I am a student. Are you a student?2) They are blue. Are they blue?3) He is Tom. Is he Tom?2.谓语是动词原形，在句首加do。1).I have a book . Do you have a book?2) They like Chinese . Do they like Chinese?3) We come from China. Do you come from China? 3.谓语动词是第三人称单数，在句首加Does，动词用原形。1) She has a basketball . Does s
12、he have a basketball?2) Maria likes China. Does Maria like China?3) Jane comes from the U.S.A. Does Jane come from the U.S.A?4) She knows Maria. Does she know Maria?练习:将下列句子变成一般疑问句。1. I am a teacher. _ _ a teacher?2. They are students. _ _ students?3. Jane is a girl. _ _ a girl?4. They like English.
13、 _ they like English?5. I come from China. _ you come from China?6. He likes Chinese. _ he_ Chinese?7. Maria comes from America. _ Maria _ from America?8. We speak Chinese. _ you_ Chinese?三.一般疑问句做肯定,否定回答1.Are you Maria ? 肯定回答：Yes , I am.否定回答：No, Im not.2.问句和答语的动词保持一致.1) Are you a student? 肯: Yes, I am. 否： No, Im not.2) Is he Jack ? 肯：_. 否：_.3) Do they like Chinese? 肯：_. 否：_.4) Does she have a basketball ? 肯：_. 否：_.3.问句和答语中的主语保持一致。（必须用主格）1) Is Jane from th
