初中英语be定义及用法[10-18 00:15:41] 来源:http://www.guaimaomi.com 初三英语知识点 阅读:9246次
概要:如:I study.改为一般疑问句:Do you study ?顺口溜:be氏三朵花, am, is还有are,我(I)恋am, 你(you)恋are,is跟了他(he)她(she)它(it),单娶is, 复娶are。详细讲解:英语的be 动词是个用法比较复杂的动词。复杂的原因有两点:1、 除了原形的 be 之外,对于不同人称代词以及单数名词和复数名词,be 会有各种变化形式和缩写形式。概括一下有七种形式:be, am, is, are, was, were, been, being。它们与人称代词和名词单、复数的搭配关系是:现在时 I am, you are, he/she/it/ is, we/you/they are;名词单数、不可数名词用is,复数用are。缩略式 I'm, you're, he's, we're, you're, they're否定缩略式 I'm not, isn't, aren't过去时 I was, you were, he/she/it/ was, we/you/they were;名词单数、不可数名词用was,复数用were。否定缩略式 wasn't, weren't过去分词 been现在分词 being2、在句子中,be有两种主要作用:一是作为系动词(The Linking Verb),本身可以作用谓语动词;二是做为助动词(The Auxiliary Verb),与谓语动词 初中英语be定义及用法,http://www.guaimaomi.com学习是劳动,是充满思想的劳动。www.guaimaomi.com为大家整理了初中英语be定义及用法,让我们一起学习,一起进步吧! 1. Be动词有三个,am,is还有are.我用am, 你用are, is跟着他她它,复数全部都用are. 如果遇到过去时,was来把am,is替,were来把换掉动词are 2. do和be动词的用法区别 Be 动词就是(am,are,is)..句子中如果没有实意动词(例如:write,buy)之类的动词,就直接在主语后面加Be动词。而如果是句子中有实意动词,那么如果你要改为一般疑问句,就要借助DO(do也称为助动词),例如:I study. 改为一般疑问句:Do you study ? 顺口溜:be氏三朵花, am, is还有are, 我(I)恋am, 你(you)恋are, is跟了他(he)她(she)它(it), 单娶is, 复娶are。 详细讲解: 英语的be 动词是个用法比较复杂的动词。复杂的原因有两点: 1、 除了原形的 be 之外,对于不同人称代词以及单数名词和复数名词,be 会有各种变化形式和缩写形式。概括一下有七种形式:be, am, is, are, was, were, been, being。它们与人称代词和名词单、复数的搭配关系是: 现在时 I am, you are, he/she/it/ is, we/you/they are;名词单数、不可数名词用is,复数用are。 缩略式 I'm, you're, he's, we're, you're, they're 否定缩略式 I'm not, isn't, aren't 过去时 I was, you were, he/she/it/ was, we/you/they were;名词单数、不可数名词用was,复数用were。 否定缩略式 wasn't, weren't 过去分词 been 现在分词 being 2、在句子中,be有两种主要作用:一是作为系动词(The Linking Verb),本身可以作用谓语动词;二是做为助动词(The Auxiliary Verb),与谓语动词一起构成各种时态和被动语态等。 下面做个简要的讲解。 一、be 动词做系动词 1、系动词+表语”的结构 当be 动词做系动词使用时,主要构成“系动词+表语”的结构,在句子中做谓语。表语可以是名词、形容词、副词、介词短语等。例如: The man is a science teacher. Mary's new dresses are colourful. Mother is in the kitchen now. I have been there before. They shall be here at 10:00 tommorow. That can't be true. You are not being very polite. Your brother is being very annoying this evening www.guaimaomi.com2、be 动词的一般疑问句,方法是把be 移到主语前面,也可说成是移到句首。 Is the man a science teacher? Yes, he is. / No, he isn't. Are Mary's new dresses colourful? Yes, they are. / No, they aren't. Was mother in the kitchen then? Yes, she was. / No, she wasn't. Were you at home the day before yesterday? Yes, I was. / No, I wasn't. Was she late this morning? Yes, she was. / No, she wasn't. 3、be 动词用在特殊疑问句 在特殊疑问句里,be 动词仍然移到主语前面,但特殊疑问句是以特殊疑问词开头的,所以be 动词只能说是移到主语前面,或者说是在特殊疑问词的后面。例如: Whose bike is broken? Xiao Ming's bike is. Who was singing in the room? Mr. Zhang was. Where are you from? I am from Wuhu. What class were you in? We were in Class 2. How old is Tom? He is ten. 4、be 动词的否定句 be 动词做谓语时,它的否定形式是在be 后加not,并且可以缩写。例如: It is not sunny today. Tom and his friends are not in the park. You were not nine years old when I went to the university. He was not often late for his class when he was a student. I wasn't here yesterday. My parents weren't at home last Sunday. 5、be 动词的祈使句 be 动词的祈使句有肯定和否定两种形式。肯定形式是以be 动词开头,而否定形式或强调句形,要加don't 或do。例如: Be careful! Be a good boy! Don't be silly! Don't be a fool! Do be obedient! Do be careful. 二、be 动词做助动词
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