做系动词 be动词是,是把Be 提前,那这里是用do来提问么

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Are you looking for your watch?这句话使用be动词are来提问,而不是用助动词do来提问,是因为look是系动词吗,如果不是,请讲明原由,
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本句用are来提问,不借助于助动词do来提问,不是因为look是系动词,而是因为本句是现在进行时态,其构成为:am/is/are+动词的-ing形式.本句中的look for是“寻找”,此处look是实义动词.句意:你在寻找你的手表吗?
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不是的,be doing sth为现在进行时,提问时将be 动词提前,其它不变。
这个句子的are是构成现在进行时的助动词。现在进行时的谓语动词构成 be+ v-ing.而且我觉得你的英语语法当面好像相当的糟糕我真心不知道啊,透露一下,我纯自学,还在学新一,在现在完成时这里给转晕了,见量一下吧,我现在对语法,完全有点白的,还得慢慢来啊!这个也不是现在完成时啊...
这个也不是现在完成时啊
这句话是现在进行时 be+ v-ing.陈述语序:You are looking for your watch.
那是否也就是说,现在进行时,只能用is,和are来提问了吗?
谢谢你了!
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Water must be kept from running away.这里面keep系动词不是无被动语态会进行时态吗那这个里面为什么还用 be kept
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keep sb /sth from doing sth.阻止……做某事,在这里,keep 不是系动词.
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在被动语态里讨论句式是经常出错的。应将它改为主动语态。由于原句没有说明谁是keep的执行者,我们就随便加一个。现在我加了一个“we“:We must keep water from running away. 这一下就明朗了:这里是keep sth. from doing sth. 这样一个句式。参考译文:必须防止水的流失。祝你学习进步,更上一层楼! (*^...
keep 可以有被动语态的。你的句子用了一个句型:keep sb. from doing sth. 不让某人做某事,即:We must keep water from running away.
那么,这句话变成被动语态时,就是你给的句子了。
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初中英语动词知识点:Be动词定义及用法
  1. Be动词有三个,am,is还有are。
  我用am,你用are,s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
  2、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
  助动词be 有两个基本用法,一是与谓语动词一起构成各种时态,二是构成被动语态。
  “be + 现在分词组”成各种进行式时态。例如:
  Tony's maid is washing his new car.
  The children are playing in the field.
  Samuel was eating when I came in.
  We have been living here since 1959.
  This time next day they will be sitting in the cinema.
  三、注意事项
  英语句子中,为了表达时态或被动语态的需要,常常会出现几个助动词连在一块儿使用。也就是说,助动词be会和其它助动词一起使用。这时候,整个句子的一般疑问句和否定句,就不一定是对be 进行变化了,而是以第一个助动词为主进行变化。即哪个助动词在先,就以它为主进行变化。例如:
  [肯定句] All the wonderful birds can be found in our Bird Park. (助动词有两个:can be )
  [疑问句] Can all the wonderful birds be found in our Bird Park? (移第一个can)
  [否定句] All the wonderful birds can not be found in our Bird Park. (在第一个can 后加not)
  [肯定句] I have been there before. (两个助动词:have, been )
  [疑问句] Have you been there before?
  [否定句] I have not been there before.
  [肯定句] I shall be having my supper at six tomorrow evening. (两个助动词:shall, be )
  [疑问句] Will you be having my supper at six tomorrow evening?
  [否定句] I shall not be having my supper at six tomorrow evening.
  四、助动词be,无词义,辅助主要动词一起在句中作谓语动词。用法如下:
  1. be+doing:构成进行时态,有现在和过去两种进行时态。如:
  The girls is reading and copying the new words now.
  Young Tom was always asking questions and trying out new ideas.
  2. be+going to do,表示“打算或将要做某事”,be有现在和过去两种形式。如:
  We are going to plant trees in the park.
  I didn’t know if she was going to come here.
  3. be+to do,表示“按计划安排将要做某事”。如:
  The new shop is not to be opened till next Monday. One night an angel came to
  Mary and told her that she was to have this special boy.
  五、there be
  there be句式为:there be+主语部分+状语部分,表示“某处存在某物”,be常用现在时,过去时和将来时等。如:
  Oh, cool! And there are many things to see. There is even a deer park in Sanya.
  There are about 80 pyramids in Egypt.
  Will there be a football match in your school next week?
  六、实义be
  可以将be视为实义动词,因为它具有实际的词义,如“成为;做;发生;举行;逗留;到达”等。如:His daughter wants to be a doctor for animals in her twenties.Kates birthday party
  will be at half past six this evening.Jim has been in China for
  morethan two years, but he has not yet been to Yichang.
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什么时候用be动词提问用do提问
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如果你问的问题的主体是名词、形容词、副词一类的,用be提问,如are you a student?如果提问的主体是动作、状态一类的,用do,例如do you have a watch?我的感觉基本就是这样,顺便说一点,我很反对通过语法学习语言,我认...
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句子本身有be动词的,如 He is a student.---Is he a student? (有情态动词的一样,如He can swim.---Can he swim?)句子中无be动词或can等情态动词的,如 He works hard.---Does he work hard?
They work hard.----Do they work hard?
当句子是主系表的时候 就是含有be动词,然后be动词提前。表语是表达主语特征的,be动词也叫系动词。例如:She is beautiful.就把be 动词提前助动词 是针对 句子中 没有be动词 和情态动词的时候,变成一般疑问句,加的帮助完成句子疑问的词,例如:I like flowers.Do you like flowers ? 如果主语是单数第三人称 ...
be当“成为”讲的时候如:I want to be a teacher in the future.问句:What do you want to be in the future? 希望能帮到你O(∩_∩)O~
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