小熊爱兔兔
英语疑问代词的本质还是个代词，只不过它代替一个不确定的、等待对方来确认的人或者物或者事儿。用来表达疑问或者构成疑问句的代词叫疑问代词。
简单的理解可以认为疑问代词是期待对方告诉自己“什么执行了一个动作”，疑问副词是期待对方告诉自己“动作发生的样子”。
英语疑问代词的用法：
从理论上说，who是主格，用作主语，whom是宾格，用作宾语，但是在现代英语中，当用作宾语的whom用于句首时，也常可用who来代替。从用法上看，which和what可用作定语，修饰其后的名词，但who不能这样用。对于who来说，不管选择范围大还是小、明确还是不明确均可用。
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1） 疑问代词在句中起名词词组的作用，用来构成疑问句。疑问代词有下列几个： 指 人： who, whom, whose 指 物： what 既可指人又可指物： which 2） 疑问代词在句中应位于谓语动词之前，没有性和数的变化，除who之外也没有格的变化。what, which, whose还可作限定词。试比较： 疑问代词：Whose are these books on the desk? 桌上的书是谁的？ What was the directional flow of U. S. territorial expansion? 美国的领土扩张是朝哪个方向的？ 限定词： Whose books are these on the desk? 桌上的书是谁的？ What events led to most of the east of the Mississippi River becoming part of the United States? 哪些事件使密西西比河以东的大部分土地归属于美国？ 说明1： 无论是做疑问代词还是限定词，which 和 what 所指的范围不同。what所指的范围是无限的，而which则指在一定的范围内，例如： Which girls do you like best? 你喜欢哪几个姑娘？ What girls do you like best? 你喜欢什么样的姑娘？ 说明2： Whom是who的宾格，在书面语中，它作动词宾语或介词宾语，在口语中作宾语时，可用who代替，但在介词后只能用whom, 例如： Who(m) did you meet on the street? 你在街上遇到了谁？（作动词宾语） Who(m) are you taking the book to? 你要把这书带给谁？（作介词宾语，置句首） To whom did you speak on the campus? 你在校园里和谁讲话了？（作介词宾语，置介词 后，不能用who取代。） 说明3： 疑问代词用于对介词宾语提问时，过去的文体中介词和疑问代词通常一起放在句首，现代英语中，疑问代词在句首，介词在句未，例如： For what do most people live and work? 大部分人生活和工作的目的是什么？（旧文体） What are you looking for? 你在找什么？（现代英语） 说明4： 疑问代词还可引导名词性从句，例如： I can't make out what he is driving at. 我不知道他用意何在。 Can you tell me whose is the blue shirt on the bed? 你能告诉我床上的蓝衬衣是谁的吗？ Much of what you say I agree with, but I cannot go all the way with you. 你说的我大部分同意，但并不完全赞同。 3）疑问代词用于特殊疑问句中，疑问代词一般都放在句首，并在句中作为某一句子成分。如： ①What is this? （what作表语）这是什么？ ② Which is bigger, the left one or the right one? （which作主语）哪一个大一点，左边的一个还是右边的一个？ ③What are you talking about? （what作宾语）你在说什么？ ④Who will go with you? （who作主语）谁和你一起去？ ⑤Whom are you talking to? （whom作宾语）你在跟谁说话？ ⑥Whose dictionary is this? （whose作定语）这是谁的字典？ ●which表示在一定数目（或范围）之内的选择，what则没有这种限制。如： ①Which do you prefer, coffee or tea? 咖啡和茶，你喜欢喝哪种？ ②What do you usually drink before dinner? 你饭前通常喝什么？ 4）疑问代词可以引导主语、宾语、表语从句等。疑问代词本身在从句中担当一定的句子成分。如： ①Who will attend the meeting is still not decided. 谁出席这个会议，现在还没有决定。（疑问代词who引导一个主语从句，它本身又在从句中作主语。） ②Do you know which grade she is in? 你知道她上几年级了吗？（疑问代词which引导宾语从句，它本身在从句中作定语。） ③What he says sounds true. 他讲的话听起来很对。（疑问代词what虽然相当于all that，它引导一个主语从句，但它本身作从句的宾语。） ④What his name is remains unknown. 还没有人知道他叫什么名字。（疑问代词what引导主语从句，what在从句中作表语）
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特殊疑问词和用法
1、who 对人物提问
He is LiLie Who is he ?
He is my brother. Who is he ?
Who's your English teacher?
Who is the girl in red?
Who is he?
2、what 对事情或东西提问
What's this?
What's wrong?
What are you going to do?
what 引申的其它疑问词：
what colour？ 对颜色提问
What colour is your school bag?
what time？ 对时间提问
What time is it now?
3、which 对同类中的某一个提问
Which season do you like best?
Which one do you like,the red one or the blue one?
Which country do you come from?
4、whose 对物品所属关系提问
Whose book is this?
Whose clothes are those?
Whose basketball is that?
5、when 对时间提问
When is your birthday?
When is Mid-Autumn Festival?
When are you going to Shanghai?
6、where 对地点提问
Where do you play games on Sunday?
Where are you from?
Where is your school?
Where is the post office?
7、why 对原因提问
Why do you like winter?
Because I can make a snowman.
Why are you angry?
Why the earth goes around the sun?
8、how 对方式，方法或程度提问
How do you come to school?
I come to school on foot.
How do you spell it?
How is the weather in Shanghai?
=What's the weather like in Shanghai?
How is she now?
how 引申的其它疑问词：
how many 对可数名词的数量提问
How many books do you have?
how much 对价钱，不可数名词的数量提问
How much are the socks?
How much milk is there in the fridge?
how far 对距离提问
How far is it from your home to school?
how tall 对高度提问
How tall is the giraffe?
how heavy 对重量提问
How heavy is the elephant?
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