I want exchange this dress.i want to exchange this dress,还是 i want exchange this dress...最好说下want 的用法

I want exchange this dress.i want to exchange this dress,还是 i want exchange this dress...最好说下want 的用法
I want exchange this dress.
i want to exchange this dress,还是 i want exchange this dress.
..
最好说下want 的用法

I want exchange this dress.i want to exchange this dress,还是 i want exchange this dress...最好说下want 的用法
前者正确,want后面加动词的话一定要加to,want to do sth,如果是加名词就不行了,比如上面那句话也可以说成,I want this dress (to be) exchanged.

应该是第一句，want to do sth

第一个对,want 后面是动词用to want to do sth.，名词直接加 want sth. 这里exchange是动词

want to do sth.
want somebaby to do something
想让某人作某事
want to do something
想做某事
want to be ...
想成为．．．
want something...
想要...
want
AHD:[w¼nt, w&...

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want to do sth.
want somebaby to do something
想让某人作某事
want to do something
想做某事
want to be ...
想成为．．．
want something...
想要...
want
AHD:[w¼nt, wônt]
D.J.[w%nt, w%8nt]
K.K.[w$nt, w%nt]
v.（动词）
want.ed， want.ing， wants
v.tr.（及物动词）
To desire greatly; wish for:
渴望：强烈地希望；渴望：
They want to leave.
他们渴望离开
To be without; lack.See Synonyms at lack
缺少；没有参见 lack
To be in need of; require:
需要；需求：
“‘Your hair wants cutting,’ said the Hatter”(Lewis Carroll)
“‘你的头发需要剪一下，’海特说道”(刘易斯·卡罗尔)
To request the presence or assistance of:
需要：需要…的出现或帮助：
You are wanted by your office.
你办公室的人在找你
To seek with intent to capture:
通辑：以抓获为意图寻找：
The fugitive is wanted by the police.
逃犯已被警方通缉
To have a desire for.See Synonyms at desire
有…的欲望参见 desire
To have an inclination toward; like:
喜爱：对…有偏爱；喜欢：
Say what you want, but be tactful.
圆滑地说出你想要什么?
v.intr.（不及物动词）
To have need:
需要：
wants for nothing.
什么也不需要
To be destitute or needy.
贫困或匮乏
To be disposed; wish:
愿意；希望：
Call me daily if you want.
如果你愿意，就每天给我打电话吧
n.（名词）
The condition or quality of lacking something usual or necessary:
缺乏：缺乏某些普通或必要的东西的状态或性质：
stayed home for want of anything better to do.
无事可做只好待在家里
Pressing need; destitution:
贫困：极端的贫穷；贫困：
lives in want.
生活于贫困之中
Something desired:
渴望之物：
a person of few wants and needs.
清心寡欲的人
A defect of character; a fault.
缺点：人格上的缺点；过失
want in 【俚语】
To desire greatly to enter:
想要进去：极其渴望进入：
The dog wants in.
这条狗想要进去
To wish to join a project, business, or other undertaking.
需要：希望加入某项工程、业务或其它事情
want out 【俚语】
To desire greatly to leave:
想要出去：极其渴望离开：
The cat wants out.
这只猫想要出去
To wish to leave a project, a business, or other undertaking.
想要出去：希望离开某项工程、业务或其他事情
Middle English wanten [to be lacking]
中古英语 wanten [缺少]
from Old Norse vanta * see eu- 2
源自 古斯堪的纳维亚语 vanta *参见 eu- 2
want“er
n.（名词）
want“less
adj.（形容词）
want“lessness
n.（名词）
When want is followed immediately by an infinitive construction, it does not take for : I want you to go (not want for you ). When want and the infinitive are separated in the sentence, however, for is used: What I want is for you to go. I want very much for you to go. See Usage Note at wish
当want 后紧跟一个不定式结构的时候，它不能接 for ： I want you to go（我希望你走） （不是 want for you )。但是当 want 和不定式在句中分开的时候， for 就用于此： 我所希望的是你离开。我非常希望你离开 参见 wish
want
[wRnt; (?@) wC:nt]
vt., vi.
（常与to连用）要，想要；想得到
Did You Want to Tell Me something?
你想告诉我什么吗?
His wife wanted him to repair their son's bicycle!
他妻子叫他去给他们的儿子修理自行车!
They want good jobs.
她们想要好的工作。
I want a bicycle for my birthday.
我生日的时候想要一辆自行车。
需要
The house wants painting.
房子需要油漆了。
I want sb. to help me.
我需要有人帮助我。
（常与to连用）应该，得
You want to see a doctor at once.
你应该马上去看医生。
（常与for连用）缺少； 没有；不够
His answer wants politeness.
他的回答不够礼貌。
通缉；追捕
He is wanted man.
他是个被通缉的人。
want
n.
（常与of连用）缺少；没有；不够
The plants died from want of water.
植物因缺水而枯萎。
贫困
be now in want
生活在贫困之中
(pl) 需求
want
来自古英语 wan 不足，欠缺

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want to do sth.
want sb to do sth.