疑问句可分为：一般疑问句、特殊疑问句和反意疑问句.
一般疑问句是疑问句的一种.它是指用yes或no来回答的句子.其结构是：
系动词be/助动词/情态动词＋主语＋其他成分?
如:
Is this your pen?
Yes it is./No it isn't.
注意：
1．将陈述句变为一般疑问句时,如句中有be 动词（am is are …）时,可直接将它们提至主语前.如主语为第一人称,应将其改为第二人称.如：
I'm in Class 2Grade 1． →
Are you in Class 2Grade
We're watching TV． →
Are you watching TV?
2．陈述句中有情态动词（can may must …）时,也可直接将它们提至主语前,即可成为一般疑问句.如：
He can swim now． →
Can he swim now?
The children may come with us． → May the children come with us?
3．陈述句中只有一个实义动词作谓语且其时态为一般现在时,变为一般疑问句时要在句首加do或does 主语后的实义动词用原形.如：
I like these animals． →
Do you like these animals?
She wants to go to the movies． → Does she want to go to the movies?
4．一般疑问句一般读升调(↑)
5．一般疑问句有时不用yes或 no 回答.
Are they in town now?
I think so.
May I sit here?
Certainly．
Does he like soccer?
Sorry I don't know．
反意疑问句一般由/"陈述句+简略的一般疑问句/"构成,它主要有/"肯定陈述句+否定的简短问句（简称前肯后否）/"和/"否定陈述句+肯定的简短问句（简称前否后肯）/"两种结构.但在实际运用中,还有许多需要注意的情况,今天我们就来谈谈最常见的两种：
1.当陈述部分有few,little,hardly,never等表示否定含义的词时,附加问句部分要用肯定形式.例如：
He will never forget his past,will he?他决不会忘记他的过去,对吗?
There is no milk in the bottle,is there?瓶子里没有牛奶了,是不是?
注：如果陈述部分的否定词是通过加词缀 (前缀或后缀) 构成的,那么,附加问句部分仍用否定形式.例如：
That girl is unhappy,isn/'t she?那个女孩不高兴了,是不是?
The young man on the motorbike is too careless,isn/'t he?摩托车上的那个年轻人太粗心了,对吧?
2.当陈述部分是祈使句时,附加问句常用/"will you?/"也可用/"won/'t /would/can / can/'t you?/"等.例如：
Don/'t go to the park by bus,will you?别乘公共汽车去公园,好吗?
Close all the windows,will you / won/'t you?把所有的窗户都关上,好吗?
注：① let/'s 用于提出建议,包括听话人在内,其附加问句用/"shall we?/"例如：
Let/'s go to see the pandas first,shall we?咱们首先去看熊猫,好吗?
② let us表示征求对方许可,其附加问句用/"will you?/"例如:
Let us wait until 5:00,will you?让我们等到五点,好吗?
③ let后接第三人称时,附加问句用/"will you?/"例如：
Let him come in,will you?让他进来,好吗?
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.
特殊疑问句有两种语序：
1．如疑问词作主语或主语的定语,即对主语或主语的定语提问,其语序是陈述句的语序：疑问词（＋主语）＋谓语动词＋其他成分?如：
who is singing in the room?
whose bike is broken?
2．如疑问词作其他成分,即对其他成分提问,其语序是：疑问词＋一般疑问句语序?如：
what class are you in?
What does she look like?
Where are you from?
What time does he get up every morning?
How do you know?
注意：
1．回答特殊疑问句时,不能用yes ／ no,即问什么答什么,尤其是简略回答.如：
Who is from Canada?
Helen (is)．
Where's the restaurant?
Near the station．
Why do you like koalas?
Because they are cute．
2．特殊疑问句一般读降调(↓).