PEP四年级上册重点语法汇总.doc

四年级英语上册语法要点一课时：be 动词主讲与人称代词的搭配1、基本形式：am、are、is（1） am第一人称I+am (注意：“I”无论何时都要大写，不管位于句首还是句中)例：I am a beautiful girl. I am twenty.（2） are第二人称you+are; 一人称复数we+are； 三人称复数they+are 其他复数名词+are (注意：第二人称单复数同形，都为you) 例：You are my good friend. We are in the same class.They are on the road. The books are on the desk. (3) is第三人称he(男) +is ; she(女)+is; it(不是人)+is;其他单数名词+is例：He\She is a good student. It is a white cat.A dog is on that street.2、肯定、否定、疑问（等于号后是简写）肯定否定——be动词后加not一般疑问——be动词移到主语前一般疑问否定一般疑问回答 肯定和否定I am… =I’m ….I am not…=I’m not ...Am I…?Am not I…?Yes,I’m.No,I’m not.You are…= you’re…You are not…=You aren’t…Are you…?Are not you. ..? =Aren’t you…?Yes,you are.No,you are not.She\He\It is…=She\He\It is not… =She\He\It isn’t…Is she\he\it…?Is not she\he\it…? =Isn’t she\he\it…?Yes,she\he\It is.No,she\he\It is not.We are=We’reWe are not…=We aren’t…Are we…?Are not we…?=Aren’t we…?Yes,we are.No,we are not.They are=They’reThey are not…=They aren’tAre they…?Are not they…?=Aren’t they…?Yes,they are.No,they are not.例：I am(not) from London.My eyes are(not) small.My hair is(not) long.Am I a Chniese? 回答： 肯定：Yes, you are. 否定： No, you aren’t.Is the cat fat? 回答：肯定：Yes, it is. 否定： No, it isn’t.注意：在一般疑问回答中，肯定回答除I’m不可简写,否定回答均可简写。

另：特殊疑问句中：where\how\who\what\why+be动词+人称代词或名词？例：What is your name? My name is GaoBuHan. Where are you? I’m in the classroom.3．总结：Be的用法口诀   I用am；you、we、they 都 用are；is连着he，she，it；  单数名词用is,复数名词全用are   变疑问，往前提，句末问号莫丢弃   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 。