1、七年级英语上册Unit 1语法写作讲解一、语法精讲（一）含be动词的一般现在时【用法详解】（1）歌谣：be动词有三个，am、is还有are; 我（I）用am, 你（you）用are;is连着他（he）、她（she）、它（it）； 单数名词用is, 复数全部都用are.Eg: I am a good girl.我是一个好女孩。You are my best friend. 你是我最好的朋友。He is from England. 他来自英国。She is my sister.她是我姐姐。It is a cute dog.它是一条可爱的狗。The boy is clever.那个男孩很聪明。The
2、y are in the same school. 他们在同一所学校。The dogs are small.那些狗很小。（2）歌谣：be动词多变化，am, is 还有are； 变否定很简单，not放在be后面；变疑问往前提，句首大写莫迟疑；还有一点要注意，句末问号别忘记。注意：在含有be动词的句子，变否定句时在be动词后加not；变一般疑问句把be动词提前。Eg: (1)I am a good girl.- Im not a good girl.- Are you a good girl? 肯定回答：Yes, I am .否定回答： No, Im not.(2)He is from Engli
3、sh.- He isnt from English.- Is he from English? 肯定回答：Yes, he is.否定回答：No, he isnt.(3)They are in the same school.- They arent in the same school.- Are they in the same school? 肯定回答：Yes, they are.否定回答：No, they arent（3）be动词的缩略式：肯定式：Im = I am; youre = you are; hes = he is; shes = she is;its = it is; wer
4、e = we are; theyre = they are否定式：Im not; you arent; he isnt; she isnt; it isnt;we arent; they arent（4）系动词Be的用法：在一般现在时中，be后常加形容词、名词、介词短语等做表语，说明身份、年龄、状态等。Eg: I am very happy.（be + adj.）I am a student.(be + n.)She is at home now. (be + 介词短语)【即学即用】阅读下面短文，用am、is、are填空Hey there! I 1._am_ Ellen Smith.Smith
5、 2._is_ my last name.I 3._am_ from the US.I live in Beijing with my big family.I have a good friend.Her name 4._is_ Meimei.We 5._are_ both 12 years old.We 6._are_ in the same class.Our class teacher 7._is_ Mr Zhang.I like Chinese food very much.My favourite food 8._is_ beef noodles.（二）人称代词和物主代词【用法详解
6、】人称动词不仅指人，也可指物，有人称、数和格的变化，分为主格和宾格两种形式。主格多用作主语；宾格多用作宾语。物主代词表示所有关系的代词，物主代词分为形容词性物主代词和名词性物主代词。第一人称第二人称第三人称单数复数单数复数单数复数主格Iweyouyouhesheitthey宾格meusyouyouhimheritthem我我们你你们他她它他们形容词性物主代词myouryouryourhisheritstheir我的我们的你的你们的他的她的它的他们的（1）人称代词主格在句中一般作主语： Eg: I am a boy.我是一个男孩。He is forty years old. 他四十岁。（2）宾格
7、位于动词和介词之后作宾语。Eg: I like him. 我喜欢他。I go to school with her. 我和她一起上学。（3）形容词性物主代词相当于形容词，在句中只能作定语修饰名词：使用时放在被修饰的名词前，表示所属关系。Eg: my book; his name在形容词性物主代词修饰的名词前还可以加其它形容词。Eg: my old friend在名词前有形容词性物主代词修饰时，不能用冠词和this, that等Eg: This is my an eraser.() - This is my eraser.()【即学即用】根据所给提示填写适当的代词1.These are our
8、books and _their_（他们的）books are on the desk.2.The little cat is lovely.Whats _its_（它的）name?3.Mum, I cant find _my_（我的）shoes.Where are they?4.Is that _your_（你的）dress? Its nice.5.I want to give my mother a gift on _her_（她的）birthday.6.Peter cant find _his_（他的）ping-pong bat.Hes sad.7.We must clean _our_
9、（我们的）classroom every day.8.Are you happy to see _your_（你们的）old friends?9.The girl got a new bike from _her_（she）father and _she_（she）loves _its_（it）colour very much.10.Bob and Bill are twins._Their_（they）favourite book is Journey to the West.二、写作【话题】Introduce yourself and your new friends.* 提示：1.My
10、name is .2.I like .3.This is my friend .4.Her/His name is.5.She/He is from .6.Her/His favourite .is .【写作步骤】定文体(记叙文)、人称(第一人称)、时态(一般现在时)【范文】 Hello, everyone! My name is Zhou Pei.Im 12 years old.I am from Beijing, China.I like reading books a lot.My favourite animal is panda.This is my new friend.Her name is Lisa.She is 12 years old, too.She comes from America.Now she lives in Beijing with her parents.Her favourite animal is panda, too.She likes eating Beijing roast duck.Lisa and I are good friends now.3
