1、 be动词的一般现在时有三种形式，即：动词的一般现在时有三种形式，即：am,is,are（翻译为（翻译为“是是”）1.如果主语是第一人称如果主语是第一人称I（我）时，（我）时，be动词用动词用am。如：I am a student.我是一名学生。I am 还可缩写成还可缩写成Im。如：Im David.我是大卫。am 与与 not 不能缩写不能缩写。如：I am not a bad boy.第1页/共17页 2.如果主语是如果主语是you（你，你们）（你，你们）,they（他（他们，它们，她们）或名词复数们，它们，她们）或名词复数（两个以上（两个以上的人或物）时，的人或物）时，be动词必须用动
2、词必须用are。如：如：Are you twelve?你是十二岁吗？你是十二岁吗？Tom and Lily are good friends.汤姆和莉莉是好朋友。汤姆和莉莉是好朋友。They are at school.他们在学校。他们在学校。are与主语还可缩写。如：与主语还可缩写。如：We are=Were，They are=Theyre,You are=Youre。而。而are与与 not可缩写成可缩写成arent。如：如：They arent students.他们不是学生。他们不是学生。第2页/共17页 3.如果主语是单数名词、不可数名词或单如果主语是单数名词、不可数名词或单数第三人
3、称代词（数第三人称代词（he,she,it）时，）时，be动词动词用用is。如如:My mother is a teacher.我的妈妈是一我的妈妈是一名老师。名老师。He is a student.他是一名学生。他是一名学生。is也可与主语缩写也可与主语缩写,如如:He is=Hes,My mother is=My mothers等。等。但是但是This is不可缩写。而不可缩写。而is与与not可缩写成可缩写成 isnt。如如:This isnt a book.这不是一本书。这不是一本书。第3页/共17页 4.句中含有be动词的陈述句变一般疑问句。把be动词提到句首，be动词要变大写。注意
4、第一人称变第二人称。回答时用yes或no表示，结构：Yes,主语+be动词，No，主语+be动词+not。如：It is a book.变为：Is it a book?5.句中含有be动词的肯定陈述句变否定句。先找肯定陈述句中的be动词，在be动词后加not.如：It is a book.变为:It is not a book.第4页/共17页 根据以上叙述我们可以把动词的用法以口根据以上叙述我们可以把动词的用法以口诀的形式表述出来：诀的形式表述出来：我(I)用am，你(you)用are，is连着他(he)，她(she)，它(it)；单数名词用is，复数名词全用are。变疑问，往前提，句末问号
5、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。第5页/共17页Be动词用法练习题：动词用法练习题：选择正确的be动词填空 1.I _ a student.2.We _ friends.3.He _ a good boy.4.She _ my sister.5.They _ my parents.6.You _ 11 years old.7.I a doctor.8.My father a policeman.9.We having breakfast.10.Tom from Canada.amareisisareareamisareIs 第6页/共17页11.He
6、r sister a nurse.12.They my good friends.13.He my brother.14.She ten.15.His mother an actress.16.It _a cat.17.The apples _nice.18.This _a cat.19.The cat _funny.20.The dogs _funny.isareisisisisisisareare第7页/共17页改写句子1.I am a teacher.否定句：一般疑问句：肯定回答：否定回答：2.They are new students.否定句：一般疑问句：肯定回答：否定回答：3.He
7、is a good boy at home.否定句：一般疑问句：肯定回答：否定回答：I am not a teacher.Are you a teacher?Yes,I am.No,I am not.They are not new students.Are they new students?Yes,they are.No,they are not.arent He is not a good boy at home.Is he a good boy at home?Yes,he is.No,he isnt第8页/共17页4.Bob is in Class One,Grade Six.否定句
8、：一般疑问句：肯定回答：否定回答：5.I am a good student at school.否定句：一般疑问句：肯定回答：否定回答：Bob is not in Class One,Grade Six.Is Bob in Class One,Grade Six?Yes,he is.No,he isntI am not a good student at school.Are you a good student at school?Yes,I am.No,I am not.第9页/共17页7.We are having an English class.否定句：一般疑问句：肯定回答：否定回
9、答：8.It is sunny today.否定句：一般疑问句：肯定回答：否定回答：We are not having an English classAre you having an English class?Yes,we areNo,we arentIt is not sunny today.Is it sunny today？Yes,it is No,it isnt第10页/共17页 单项选择1.Do you often play ping-pong?_.A.Yes,I dont B,No,I do C.Yes,I do2.What do you have on Fridays?A.
10、I have science B.I Watch TV C.Yes,I do3.What do you do on Fridays?A.I go to school B.I have science C.Yes,I do 4._ I have English and PE on Fridays.A.What do you do on Fridays?B.What do you have on Fridays?C.What day is it today?cAAB第11页/共17页5._ I have a cooking class.A.What do you have on Wednesday
11、s?B.What day is it?C.What time is it?6._ Its Monday today.A.What day is it today?B.What do you have on Mondays?C.What time is it?7._ Its 8:00 now.A.What time is it?B.What do you have on Mondays?C.What day is it?AAA第12页/共17页What do you often do on the weekend?第13页/共17页What do you often do on the weekend?第14页/共17页No,I dont.Do you often listen to music?1.Do you often play ping-pong 2.Yes,I do _第15页/共17页 给下列单词分分类。A.windy B.eat C.happy D.tea E.meet F.many G.sunny H.feet I.read J.baby 包含短元音 _ 包含长元音:_A C F G J B D E H I 第16页/共17页感谢您的观赏！感谢您的观赏！第17页/共17页
