疑问词在英语句子中做什么成分

疑问词在英语句子中做什么成分

who
谁
问人的身份,姓名等
He is LiLie Who is he
He is my brother.Who is he
whom
谁
问人的身份,姓名等(问宾语）
I can ask him the question.
Whom can you ask the question?
what
什么
问人的职业或事物是什么
He is a worker.What is he?
He has a book.What does he have
which
哪一个
问一定范围内特指的人或物
The big box is mine.Which box is yours?
The girl at the door is Ann.Which girl is Ann?
whose
谁的
问所属关系
This is her book.Whose book is this
This book is hers.Whose is this book?
what color
什么颜色
问颜色（表语）
My skirt is red.What color is your skirt?
What time
几点
问点时间
We play games at five in the afternoon
What time do you play games?
when
什么时候
问时间
We play games in the afternoon
When do you play games?
where
什么地方
问地点（状语）
We play games at home on Sunday
Where do you play games on Sunday?
why
为什么
问原因
He isn't at school today because he is ill.
Why isn't he at school today
how
怎样
问健康状况、
做事的方式等
He is fine/strong.How is he
I go homeby bike.How do you go home?
how old
多大几岁
问年龄
He is ten.How old is he
how many
多少
跟复数名词,
问数量
There are thirty boys in my class.
How many boys are there in your class?
how much
多少
跟不可数名词
问数量或价钱
There is some milk in the bottle.
How much milk is there in the bottle?
how far
多远
问路程
It's five kilometers away from here?
How far is it from here?
how soon
多久
问in+一段时间
He can finish it in half an hour.
How soon can he finish it
how long
多久
问一段时间,
问物体的长短
He has lived here for a year.
How long has he lived here?
The desk is one meters long.
How long is the desk
how often
多久(一次）
问频率
I go to see my parents once a month.
How often do you go to see your parents?
疑问代词what\which\who\whom作主语、宾语、表语,以及它们的补足语
疑问副词how作状语
疑问代词有who（主格）,whom（宾格）,whose（所有格）,what 和 which 等.
疑问代词用于特殊疑问句中,一般都放在句首,并在句中作为某一句子成分.如：
Who is going to speak to us tomorrow?明天谁来跟我们讲话?（who作主语）
Who told you so?是谁告诉你的?（who作主语）
Whom are you talking about?你们在说谁?（whom 作宾语,但在句首时口语中常用who代替whom）
Whose umbrella is this?这是谁的伞?（whose作定语）
What is that?那是什么?（what 作表语）
What did he say?他说什么?（what 作宾语）
Which is yours,the blue pen or the red one?蓝笔和红笔哪一支是你的?（which 作主语）
注1：疑问代词who,what,which等后面加单词ever,可用来强调语气,表达说话人的各种感情.如：
What ever do you want?你到底想要什么?
Who ever is she looking for?她究竟是在找谁?
注2：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：
What do you usually have for lunch?你们午饭通常吃些什么?
Which do you prefer,rice or buns?米饭和馒头你爱吃哪个?
Which of you comrades come from the Northeast?你们同志们中间谁是东北人?

“疑问词+to do”结构具有名词的词性作用，在句子中能做主语、宾语、表语。如：

i don't know what to do next.

when to have a meeting hasn't been decided.

the question is whether to invite her to my party.