这是个机器人猖狂的时代，请输一下验证码，证明咱是正常人~I（）aruler.请填空。_百度知道i want a ruler,please.后面应该接什么句子_百度知道Show& &&&&&&&&&&& &your&ruler.
A. you&&&&&&&&&&&B. I&&&&&&&&&&&C. me&
为您推荐：
扫描下载二维码> 【答案带解析】----- What’s this? ----- ____ a ruler. A...
----- What’s this?----- ____ a ruler.A. It
D. This’s 
试题分析：句意：--这是什么？--它是一把尺子。当问句的主语是this时，答语用it来回答。It是第三人称单数，所以动词用单数形式。故选B。
考点：考查代词的用法。
考点分析：
考点1：一般疑问句
一般疑问句通常用来询问一件事情是否属实。答句通常是"yes或no"。
句型一：Be +主语+ …? & & Are these books on the desk? 这些书在桌子上吗？
句型二：Do / Does / Did + 主语 +谓语+…? & &Do you like English? 你喜欢英语吗？
句型三：情态动词 + 主语 + 谓语 +…? &
& & & Must I finish my homework now? 我必须现在完成我的家庭作业吗？
句型四：Have / Has + 主语 + 过去分词+…?
& & & & Have you heard from him? 你收到他的来信吗？
& & & & 另外，还有以be动词、助动词或情态动词的否定缩写形式开头的一般疑问句，这种句子一般表示请求、惊讶和对事物的看法等,回答时所用的yes和no表达的意思和汉语的习惯不同。例如; & --Isn't he tall?难道他不高吗？
& & & & & & -- Yes,he is.不，他很高。
知识点拓展
1、特殊疑问句以疑问词开头，对句中某一成分提问的句子叫特殊疑问句。常用的疑问词有：what 、who 、whose 、which、 when、 where、 how 、why等。例如：
&&& who is singing in the room？
&& what class are you in﹖
2、选择疑问句提出两个或两个以上可能的答案供对方选择。选择疑问句的两种或两种以上的情况用or 连接，不能用yes或no回答，而是就其选择内容直接回答。这类疑问句有两种形式：
&&&&&&& 一种是：一般疑问句+or+被选择部分？， 这一类选择疑问句通常都是在前一个供选择的答案用低升调，后一个用降调；如果有两个以上供选择的答案，则在最后一个用降调，其余都用低升调。例如： 　　Would you like a gin，or a whisky，or a `beer？ 　　你是要喝杜松子酒，还是威士忌酒，还是啤酒？
&&&&&&& 另一种是：特殊疑问句+被选择部分（A)+or+被选择部分（B）？，也是在语调上有所区别。例如： 　　Which vase shall I use, the short one or the tall one ?
4、反意疑问句又叫附加疑问句，是指当提问的人对前面所叙述的事实不敢肯定，而需要向对方加以证实时所提出的问句。其结构为：前一部分是一个陈述句，后一部分是一个简单的问句。完成后一部分简单问句时，要根据前面陈述句的动词时态和人称来选择适当的助动词进行提问，前后两部分的人称和动词时态要保持一致。如果前一部分用肯定式，后一部分一般用否定式；反之，前一部分为否定式，后一部分要用肯定式，即“前肯定后否定，前否定后肯定”。 例如：They work hard, don’t they?
She was ill yesterday, wasn’t she?
They haven't been in beijing for three years,have they?
.反义疑问句的回答用yes， no， 但是，当陈述部分是否定形式时，回答要按事实。如：
They don’t work hard, do they?& 他们不太努力工作，是吗？
Yes, they do.& 不，他们工作努力。/No, they don’t. 对， 他们工作不努力。
1）当陈述句的主语是everyone, everybody, someone, somebody时，简短问句中的主语通常用they。如果陈述句的主语是非人称的复合词，如everything, something, anything, 则简短问句中相应的人称代词是单数的中性词it。后面的疑问句应表示为：
I am a student, aren’t I
Everyone is in the classroom, aren’t they?
Everything begins to grow in spring, doesn’t it?
Nobody will go, will they?
2）当陈述部分是I think/believe/ expect/ suppose/imagine 加从句时，疑问句应和从句的人称时态保持一致。&&&& I think chickens can swim, can’t they?&&
3）当陈述部分是祈使句时，一般情况下用will you 或 won't you。 　　
&&&&&& Give me a hand,will you?
4）以Let's开头的祈使句，疑问句必须用只有以Let usLet me开头的祈使句，问句才用will you。
5）There be 句型中，反义疑问部分必须为be 动词 + there.
6）当陈述部分有never，seldom, hardly，few，little，barely,& nothing 等否定词时，后面的疑问句则必须用肯定式。
&&&&&&& 对于陈述句和疑问句的考查，常会以单选，完形填空或句子填空的形式出现。考查知识点往往集中在反意疑问句的构成与回答、选择疑问句或陈述句与疑问句的转换方面。
典型例题：I don't think he is bright,&&&&&&&&&&&& ?
&&& A& is he&&& B isn't he&&&& C do I&&&&& D& don't I
解析：本题考查反意疑问句的构成。当陈述部分是I think 加从句时，疑问句应和从句的人称时态保持一致。所以排除C和D；主句部分don't表明是否定句，所以后面应用肯定形式。
&&&&&&& 对于反意疑问句的回答，一定要根据事实来回答，尤其是“前否定，后肯定”的反意疑问句的回答，更是我们容易出错的地方，一定要注意哦！
典型例题：——You've never seen dinosaur eggs, have you?
&&&&&&& ——_________. How I wish to visit the Dinosaur World.
A& Yes, I have&& B No, I haven't&&& C No, I have&&& D& Yes, I haven't
解析：本题考查反意疑问句的回答。根据答语“我多么希望去参观恐龙世界”可知他没去过恐龙世界，没见过恐龙蛋，根据“Yes+肯定事实”和“No+否定事实”的原则，可以得出答案。
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题型：单项填空
难度：中等
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