系动词be的用法.doc

系动词be的用法1） be +现在分词，构成进行时态，例如：They are having a meeting.他们正在开会。English is becoming more and more important. 英语现在越来越重要。 2)be + 过去分词，构成被动语态，例如：The window was broken by Tom.窗户是汤姆打碎的。English is taught throughout the world.世界各地都教英语。 3） be + 动词不定式，可表示下列内容：a. 表示最近、未来的计划或安排，例如：He is to go to New York next week.他下周要去纽约。We are to teach the freshpersons.我们要教新生。说明： 这种用法也可以说成是一种将来时态表达法。b. 表示命令，例如：You are to explain this.对此你要做出解释。He is to come to the office this afternoon.要他今天下午来办公室。c.征求意见，例如：How am I to answer him?我该怎样答复他？Who is to go there?谁该去那儿呢？d. 表示相约、商定，例如：We are to meet at the school gate at seven tomorrow morning.我们明天早晨7点在校门口集合。I概念 （1）询问年龄及回答时be不译出。 Howoldareyou?你多大了？ Imeleven.我十一岁。 （2）询问姓名与回答时be不译成“是”。 Whatsyourname?你叫什么名字？ MynameisAmy.我叫Amy。 （3）在一些表示问候的用语及答语中be不译出。 Howareyou?你好吗？ Imfine.Thankyou.我很好。谢谢。 II用法 连系动词be是am,is,are三者的原形，一般不直接出现在句子中，而是以am,is,are的形式出现。随主语的人称和数的变化而变化。am最专一，始终跟着I转；are跟you,we及表复数名词或复数意义的词连用；is的交际最广泛，is与“他、她、它”形影不离，至于名词单数，指示代词（this/that）都与is联系。 我用am，你用are； is用在他、她、它；遇到复数全用are。“be”动词的多种用法be动词可以充当连系动词和助动词。1. 充当连系动词，连接表语。Eg: He is a docter.We are in Class Four, Grade One .2. 充当时态和语态的助动词。 现在进行时态的助动词，Eg: We are singing and dancing happily . I am reading now . He is listening to the music now . 过去进行时态的助动词，Eg: The students were doing their exercises when the teacher came into the classroom.I was watching TV at eight last night . 被动语态的助动词， Eg: The car is made in America . The house was built in 2000 .be动词充当连系动词、时态、语态的助动词，在肯、否定句、一般疑问句及简短回答和特殊疑问句中的变化规则完全一样：be动词的人称、数和时态三方面变化，以及现在分词形式Eg: be-am-is-are-was-were -being , .Correct the mistakes.1. The houses was built in 2000 .2. The singer are singing the song .3. What class and what grade you are in ?4. They do going to the park next month .5. He is go to the park next month .6. It would be Monday next day .7. I should be sixteen next year .8. It would be rainy tomorrow .9. Be not so silly . 给出下列句子的否定句、一般问句及简短回答和特殊疑问句:1. The house was built in 2000 . 2. We are in Class Four, Grade One .3. The car is made in America . 4. The song is being sung by the singer ? 5. I was watching TV at eight last night1 用动词be （am， are， is）填空1、I _ a student. 2、Lucy and Lily _ from USA. 3、-Who _ they?- They _ Jim, Mike and John. 4、The white shirts _on the chair. 5、Their bikes _ under a big tree. 6、His father _ at home. 7、How old _ you? 8、_ there any birds in the tree?2 选择填空1、-What class _ you in? - I_ in Class One. A are;are B are;am C are; is2、They _ new students. We _ not new. A are ; are B are; am C are ; is3、-Where _ his pencils? - Oh, in his bag. A is B are C am4、Miss Gao _ our teacher. She _ tall. A are; are B are; is C is; is5、Their classroom _ over there. A areB isC am6、I think Ann and Betty _ in the classroom. A is B amC areBe动词的用法及介绍“Be”动词的意思是”是”,它随人称的变化而变化.1. be动词属于系动词, 在句子中主要表现为三种形式：am is、are。后面往往接形容词或名词做表语。如：(1)Im young. (young形容词做表语)(2)He is a boy.( a boy名词做表语) 含有be动词的句子在进行否定、疑问句变化时，都要在be动词上变化。(1)变为否定句：主语+be+ not+其他。即，直接在be后not.Im a Chinese boy.(变为否定句)You are good. (变为否定句)He is strict with us. (变为否定句)She is from America. (变为否定句)以上四个句子中都含有am、 is或are，变否定句时，直接在am 、is、are后面加上not.即： Im not a Chinese boy. You are not good.He is not strict with us.She is not from America.(2)变为一般疑问句：Be+主语+其他？即把be动词提到主语的前面。注意：当肯定句主语为第一人称I和We时，变一般疑问句要变为第二人称，be动词也要相应的变为are.同样肯定句中的my和our 也要变为your. I am a boy. (变为一般疑问句)Are you a student? We are good friends. (变为一般疑问句)Are you good friends? She is from America. (变为一般疑问句)Is she from America? He is strict with us