need的用法
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need的用法：
1、need用作实义动词的基本意思是缺少急切需要的东西,强调急需。
2、need是及物动词,可接名词、代词、动词不定式、动名词作宾语,也可接以动词不定式或过去分词充当补足语的复合宾语。
3、need用作实义动词时,可用于肯定句、否定句、疑问句等各种句式,有动词的全部变化形式。
词汇解析：
need
英文发音：[niːd]
中文释义：v.需要;必需;(表示应该或不得不做)有必要
例句：
I know you need your freedom too much to stay with me.
我知道你太需要自由了，无法和我在一起。
扩展资料
need的同根词：
1、needless
英文发音：['niːdlɪs]
中文释义：adj. 不必要的，不需要的；多余的，无用的
例句：
Half a million women die needlessly each year during childbirth.
每年有50万妇女在分娩时不必要地死去。
2、needful
英文发音：['nidfl]
中文释义：adj. 必要的；需要的；贫困的，困苦的
例句：
The section of society most needful of such guidance is the young male.
最需要此类指导的社会群体是青年男性。
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“need”双重角色的用法及其区别
“need”既可以作情态动词，也可以作实义动词，但是它们的用法不同。
作为情态动词的“need”的用法与其他情态动词“can”，“may”，“must”的用法基本相同：在限定动词词组中总是位居第一，没有非限定形式，即没有不定式、-ing分词或-ed分词等形式；第三人称单数现在时没有词形变化；情态动词之间是相互排斥的，即在一个限定动词词组中只能有一个情态动词。下面是“need”作为情态动词的用法：
一、need表示“需要”或“必须”，通常用于否定句和疑问句。例如：
1．You needn't do it again．你不需要再做了。
2．He needn't worry about it．这件事他无需担心。
3．Need he do this homework first？他需要先做这些作业吗？
4．Need they fill in the form？他们需要填表吗？
二、在否定句中，可以用need的否定形式＋不定式完成体。例如：
1．We needn't have worried．其实我们不必要慌。
2．You needn't have mentioned it．你本来不必提起这件事。
3．You needn't have said that when he asked．当他问的时候，你其实不必要说。
三、needn't后的不定式间或也能用进行式或被动语态。例如：
1．He needn't be standing in the rain．他不必要站在雨中。
2．We needn't be waiting in this place．我们不必要在这儿等。
3．The hedges needn't be trimmed thisweek．本周树蓠不必要整修。
“need”作为实义动词时，通常用法是：
人＋need ＋to do
物＋need ＋doing
物＋need ＋to be done
另外，“need”后还可以直接跟名词。请看下面的例子：
1．We need to collect the parcel before we leave for England．去英国之前，我们需要收拾好行李。
2．We need to tell him the truth．我们需要告诉他真相。
3．My car needs repairing．我的汽车需要修理。
4．The flowers need watering．这些花需要浇水。
5．His leather shoes needs to be mended．他的皮鞋需要修补。
6．Her room needs cleaning．她的房间需要打扫。
7．It is aquestion that needs very careful consideraton．这是一个需要慎重考虑的问题
“need”既可以作情态动词，也可以作实义动词，但是它们的用法不同。
作为情态动词的“need”的用法与其他情态动词“can”，“may”，“must”的用法基本相同：在限定动词词组中总是位居第一，没有非限定形式，即没有不定式、-ing分词或-ed分词等形式；第三人称单数现在时没有词形变化；情态动词之间是相互排斥的，即在一个限定动词词组中只能有一个情态动词。下面是“need”作为情态动词的用法：
一、need表示“需要”或“必须”，通常用于否定句和疑问句。例如：
1．You needn't do it again．你不需要再做了。
2．He needn't worry about it．这件事他无需担心。
3．Need he do this homework first？他需要先做这些作业吗？
4．Need they fill in the form？他们需要填表吗？
二、在否定句中，可以用need的否定形式＋不定式完成体。例如：
1．We needn't have worried．其实我们不必要慌。
2．You needn't have mentioned it．你本来不必提起这件事。
3．You needn't have said that when he asked．当他问的时候，你其实不必要说。
三、needn't后的不定式间或也能用进行式或被动语态。例如：
1．He needn't be standing in the rain．他不必要站在雨中。
2．We needn't be waiting in this place．我们不必要在这儿等。
3．The hedges needn't be trimmed thisweek．本周树蓠不必要整修。
“need”作为实义动词时，通常用法是：
人＋need ＋to do
物＋need ＋doing
物＋need ＋to be done
另外，“need”后还可以直接跟名词。请看下面的例子：
1．We need to collect the parcel before we leave for England．去英国之前，我们需要收拾好行李。
2．We need to tell him the truth．我们需要告诉他真相。
3．My car needs repairing．我的汽车需要修理。
4．The flowers need watering．这些花需要浇水。
5．His leather shoes needs to be mended．他的皮鞋需要修补。
6．Her room needs cleaning．她的房间需要打扫。
7．It is aquestion that needs very careful consideraton．这是一个需要慎重考虑的问题
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need
[ni:d]
n.
需要, 必需, 必需品, 要求, 贫困
vt.
需要
modal v.必要, 必须
need
need
AHD:[n¶d]
D.J.[ni8d]
K.K.[nid]
n.（名词）
A lack of something required or desirable:
需要：对想要或期望的事物的缺乏：
crops in need of water; a need for affection.
需要水的庄稼；对感情的需要
Something required or wanted; a requisite:
必需品：要求或需要的事物；需要物：
Our needs are modest.
我们的必需品是谦虚
Necessity; obligation:
必要；义务：
There is no need for you to go.
你没有必要去
A condition of poverty or misfortune:
贫困：贫穷或不幸的状况：
The family is in dire need.
这个家庭极为贫困
v.（动词）
need.ed,need.ing,needs
aux.（助词）
To be under the necessity of or the obligation to:
必须要：必须要，有义务要：
They need not come.
他们不必来
v.tr.（及物动词）
To have need of; require:
需要；想要：
The family needs money.
这个家庭需要钱
v.intr.（不及物动词）
To be in need or want.
需要，想要
To be necessary.
有必要
Middle English nede
中古英语 nede
from Old English n¶¶d} [distress, necessity]
源自 古英语 n¶¶d} [穷困，贫困]
need,necessity,exigency,requisite
These nouns denote a condition in which something essential is required or wanted; they also refer to that which is required or wanted.
这些名词都指处于对必需品的要求和需求的一种状况；它们也指需要的或要求的东西。
Need is the most general:
Need 最普遍：
There's no need to be concerned.
没必要担忧。
She is serene and contented;
她很安详、平静；
her emotional and spiritual needs are being met.
她感情和精神上的需要都得到了满足。
Necessity more strongly thanneed suggests urgency, inevitability, or unavoidable obligation:
Necessity 比need 更强， 用来指紧迫的、不可避免的或不可躲避的义务：
“I think the necessity of being ready increases.—Look to it” (Abraham Lincoln).
“我认为做好准备的 紧迫性增加了。——注意” （亚伯拉罕·林肯）。
“The rehabilitation of the cabin became a necessity” (Bret Harte).
“小屋的重新修建已是不可避免的了” （布雷特·哈特）。
Exigency implies acute urgency,especially that arising from conditions or circumstances such as those of an emergency:
Exigency 指非常紧迫，尤指产生于类似紧急事件的条件或环境：
“No . . . more pernicious [doctrine] was ever invented . . . than that any of [the Constitution's] provisions can be suspended during any of the great exigencies of government” (David Davis)
“没有…曾经创造的 能比在一次政府的危急关头对 条款的取消更为有害的” （大卫·戴维斯）。
Requisite applies to something indispensable:
Requisite 指不可缺少的事物：
“a place where the three grand requisites of water, fuel and fodder were to be obtained” (James Fenimore Cooper).See also Synonyms at lack
“三种主要必需品，水、燃料和草料都具备的地方” （吉姆斯·费尼莫尔·库珀）参见同义词 lack
Depending on the sense,the verbneed behaves sometimes like an auxiliary verb (such as can or may ) and sometimes like a main verb (such aswant or try ). When used as a main verb,need agrees with its subject, takesto before the verb following it, and combines withdo in questions, negations, and certain other constructions:
根据语义，动词need 有时当作助动词来使用（如 can 或 may )， 有时象实义动词（如want 或 try )。 当用作实义动词时，need 和主语一致， 把to 放在其后面动词的前面， 在疑问句、否定句或某些特定的造句法上和do 连用：
He needs to go.
他想走。
Does he need to go so soon?
他这么快就要走吗?
He doesn't need to go.
他不需要走。
When used as an auxiliary verb,need does not agree with its subject, does not taketo before the verb following it, and does not combine withdo :
当用作助动词时，need 不用和主语一致， 不用把to 放在其后动词的前面， 并且不用和do 连用：
He needn't go.
他不必走。
Need he go so soon?
他这么快就要走吗?
The auxiliary forms ofneed are used primarily in present-tense questions, negations, and conditional clauses. They differ subtly in meaning from the main verb forms in that they always refer to an externally imposed obligation.Hence one might sayYou needn't (or less formally, don't need to ) fill out both forms, but where the sense of necessity is internal to the subject,only the main verb can be used:
Need 的助动词形式主要用于现在时态的疑问句、否定句和条件句中。 它们在意思上和用作实义动词的形式有细微的区别，它们总指外部加强的压力。因此我们可以说你没必要 （或不太正规的 don't need to ) 填两份表格 ， 但是对于物体来说需要的意思是内在的，所以只能用实义动词：
I don't need to (not needn't ) be told how to manage my own affairs.
我不需要（而不是 needn't ) 被告诉怎知管理自己的事情 。
Note also that the use ofneed as an auxiliary is often accompanied by a presupposition that the activity in question has in fact been performed.The boys needn't have spoken frankly implies that they did in fact speak frankly, whereas the sentenceThe boys did not need to speak frankly does not; only the latter could be followed by a clauselikethey conveyed their meanings by indirection.
还需注意need 用作助动词时经常伴随一个先决条件， 质问的动作事实上已经完成了。那些男孩们本来不需要坦诚相告的 意味着他们事实上已经坦率地说了， 然而这个句子男孩们不需要坦诚地说话 就没有这个意思； 只有后者可以在其后跟这样一个句子，如他们间接地表达他们的意思
need
[ni:d]
v.
（否定形式略写为 needn't） （常与to连用）
需要
Plant needs water.
植物需要水。
He needed all his charm to persuade her that it was not his fault.
他需要使出浑身解数来叫她相信那不是他的错。
My shirt needs a button.
我的衬衫需要一枚钮扣。
She's on holiday; she needed a change from work.
她正在度假,她需要放下工作改变一下生活。
These six kitchens are all needed when the plane is full of passengers.
这六个厨房在飞机载满旅客时都用得着。
You didn't need to tell him the news; it just made him sad.
你无需告诉他这一消息, 那只会使他悲哀。
必须，不得不
You needn't talk so loud.
你不必这么大声讲话。
Need you go so soon?
你非得这么快就走吗？
We need to work harder.
我们必须更加努力工作。
You needn't have told him the news; he knew it already.
你不必再告诉他这个消息，他已经知道了。
need
n.
缺乏；缺少；需要
children's need for milk
儿童需要牛奶
The hungry children were in need of food.
这些饥饿的孩子需要食物。
责任；义务
a need for taxes
纳税的义务
No need to go yet, it's still early.
不必走，还早着呢。
必需品
Their need was fresh water.
他们所必需的是淡水。
贫穷；困难
illness, need, and other troubles of the world
疾病、贫困以及世界上其他的烦恼
He is in great need.
他穷得很。
if need be
如果需要
If need be, I can come early tomorrow.
如果需要的话，明天我可早来。
need
中古英语nede<古英语nied
[ni:d]
n.
需要, 必需, 必需品, 要求, 贫困
vt.
需要
modal v.必要, 必须
need
need
AHD:[n¶d]
D.J.[ni8d]
K.K.[nid]
n.（名词）
A lack of something required or desirable:
需要：对想要或期望的事物的缺乏：
crops in need of water; a need for affection.
需要水的庄稼；对感情的需要
Something required or wanted; a requisite:
必需品：要求或需要的事物；需要物：
Our needs are modest.
我们的必需品是谦虚
Necessity; obligation:
必要；义务：
There is no need for you to go.
你没有必要去
A condition of poverty or misfortune:
贫困：贫穷或不幸的状况：
The family is in dire need.
这个家庭极为贫困
v.（动词）
need.ed,need.ing,needs
aux.（助词）
To be under the necessity of or the obligation to:
必须要：必须要，有义务要：
They need not come.
他们不必来
v.tr.（及物动词）
To have need of; require:
需要；想要：
The family needs money.
这个家庭需要钱
v.intr.（不及物动词）
To be in need or want.
需要，想要
To be necessary.
有必要
Middle English nede
中古英语 nede
from Old English n¶¶d} [distress, necessity]
源自 古英语 n¶¶d} [穷困，贫困]
need,necessity,exigency,requisite
These nouns denote a condition in which something essential is required or wanted; they also refer to that which is required or wanted.
这些名词都指处于对必需品的要求和需求的一种状况；它们也指需要的或要求的东西。
Need is the most general:
Need 最普遍：
There's no need to be concerned.
没必要担忧。
She is serene and contented;
她很安详、平静；
her emotional and spiritual needs are being met.
她感情和精神上的需要都得到了满足。
Necessity more strongly thanneed suggests urgency, inevitability, or unavoidable obligation:
Necessity 比need 更强， 用来指紧迫的、不可避免的或不可躲避的义务：
“I think the necessity of being ready increases.—Look to it” (Abraham Lincoln).
“我认为做好准备的 紧迫性增加了。——注意” （亚伯拉罕·林肯）。
“The rehabilitation of the cabin became a necessity” (Bret Harte).
“小屋的重新修建已是不可避免的了” （布雷特·哈特）。
Exigency implies acute urgency,especially that arising from conditions or circumstances such as those of an emergency:
Exigency 指非常紧迫，尤指产生于类似紧急事件的条件或环境：
“No . . . more pernicious [doctrine] was ever invented . . . than that any of [the Constitution's] provisions can be suspended during any of the great exigencies of government” (David Davis)
“没有…曾经创造的 能比在一次政府的危急关头对 条款的取消更为有害的” （大卫·戴维斯）。
Requisite applies to something indispensable:
Requisite 指不可缺少的事物：
“a place where the three grand requisites of water, fuel and fodder were to be obtained” (James Fenimore Cooper).See also Synonyms at lack
“三种主要必需品，水、燃料和草料都具备的地方” （吉姆斯·费尼莫尔·库珀）参见同义词 lack
Depending on the sense,the verbneed behaves sometimes like an auxiliary verb (such as can or may ) and sometimes like a main verb (such aswant or try ). When used as a main verb,need agrees with its subject, takesto before the verb following it, and combines withdo in questions, negations, and certain other constructions:
根据语义，动词need 有时当作助动词来使用（如 can 或 may )， 有时象实义动词（如want 或 try )。 当用作实义动词时，need 和主语一致， 把to 放在其后面动词的前面， 在疑问句、否定句或某些特定的造句法上和do 连用：
He needs to go.
他想走。
Does he need to go so soon?
他这么快就要走吗?
He doesn't need to go.
他不需要走。
When used as an auxiliary verb,need does not agree with its subject, does not taketo before the verb following it, and does not combine withdo :
当用作助动词时，need 不用和主语一致， 不用把to 放在其后动词的前面， 并且不用和do 连用：
He needn't go.
他不必走。
Need he go so soon?
他这么快就要走吗?
The auxiliary forms ofneed are used primarily in present-tense questions, negations, and conditional clauses. They differ subtly in meaning from the main verb forms in that they always refer to an externally imposed obligation.Hence one might sayYou needn't (or less formally, don't need to ) fill out both forms, but where the sense of necessity is internal to the subject,only the main verb can be used:
Need 的助动词形式主要用于现在时态的疑问句、否定句和条件句中。 它们在意思上和用作实义动词的形式有细微的区别，它们总指外部加强的压力。因此我们可以说你没必要 （或不太正规的 don't need to ) 填两份表格 ， 但是对于物体来说需要的意思是内在的，所以只能用实义动词：
I don't need to (not needn't ) be told how to manage my own affairs.
我不需要（而不是 needn't ) 被告诉怎知管理自己的事情 。
Note also that the use ofneed as an auxiliary is often accompanied by a presupposition that the activity in question has in fact been performed.The boys needn't have spoken frankly implies that they did in fact speak frankly, whereas the sentenceThe boys did not need to speak frankly does not; only the latter could be followed by a clauselikethey conveyed their meanings by indirection.
还需注意need 用作助动词时经常伴随一个先决条件， 质问的动作事实上已经完成了。那些男孩们本来不需要坦诚相告的 意味着他们事实上已经坦率地说了， 然而这个句子男孩们不需要坦诚地说话 就没有这个意思； 只有后者可以在其后跟这样一个句子，如他们间接地表达他们的意思
need
[ni:d]
v.
（否定形式略写为 needn't） （常与to连用）
需要
Plant needs water.
植物需要水。
He needed all his charm to persuade her that it was not his fault.
他需要使出浑身解数来叫她相信那不是他的错。
My shirt needs a button.
我的衬衫需要一枚钮扣。
She's on holiday; she needed a change from work.
她正在度假,她需要放下工作改变一下生活。
These six kitchens are all needed when the plane is full of passengers.
这六个厨房在飞机载满旅客时都用得着。
You didn't need to tell him the news; it just made him sad.
你无需告诉他这一消息, 那只会使他悲哀。
必须，不得不
You needn't talk so loud.
你不必这么大声讲话。
Need you go so soon?
你非得这么快就走吗？
We need to work harder.
我们必须更加努力工作。
You needn't have told him the news; he knew it already.
你不必再告诉他这个消息，他已经知道了。
need
n.
缺乏；缺少；需要
children's need for milk
儿童需要牛奶
The hungry children were in need of food.
这些饥饿的孩子需要食物。
责任；义务
a need for taxes
纳税的义务
No need to go yet, it's still early.
不必走，还早着呢。
必需品
Their need was fresh water.
他们所必需的是淡水。
贫穷；困难
illness, need, and other troubles of the world
疾病、贫困以及世界上其他的烦恼
He is in great need.
他穷得很。
if need be
如果需要
If need be, I can come early tomorrow.
如果需要的话，明天我可早来。
need
中古英语nede<古英语nied
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一、基本用法特点
need可用实意动词和情态动词，用作情态动词时，意思是“有必要”或“需要”，其后接动词原形，通常只用于否定句或疑问句以及if或whether之后，一般不用于肯定句：
You
needn’t
do
all
these
exercises.
你不需要做所有这些练习。
Need
he
do
it
all
at
once?
他需要立即做这一切吗?
Need
they
have
done
it
yesterday?
这事他们需要昨天做吗?
Do
you
think
you
need
tell
her
about
it?
你认为有必要告诉她这件事吗?
I
wonder
if
I
need
bring
my
mosquito-net.
不知我需不需要带蚊帐。
【注】(1)
由于用作情态动词的need通常不用于肯定句，所以对于以need开头的疑问句的否定回答可用needn’t，但是肯定回答却不能用Yes,
you
need之类的，应根据具体情况改用其他表达：
"Need
he
stay
here?"
"Yes,
he
must."
“他有必要留在这儿吗?”“是的，必须留在这儿。”
(2)
need有时用于含有only,
all
等表限制意义的肯定句中：
This
is
the
only
form
you
need
fill
in.
你要填的只有这一张表。
All
you
need
do
is
to
take
a
taxi
from
the
airport.
你只需从机场打个的即可。
二、后接动词完成式的用法
若要谈论过去情况，应在其后接动词完成式：
You
needn’t
have
mentioned
it.
你没有必要提及此事的。
You
needn’t
have
come
in
person.
你当时不必亲自来的。
Need
you
have
paid
so
much?
你当时真需付那么多钱吗?
【注】(1)
在宾语从句中可直接用need表示过去(也可用didn’t
have
to)：
He
said
he
need
not
[didn’t
have
to]
hurry.
他说他不必匆忙。
(2)
注意对“need+have+过去分词”结构疑问式的回答：
"Need
he
have
come
so
early?"
"Yes,
he
had
to."
/
"No,
he
needn’t
have."“他来那么早有必要吗?”“有必要，他必须来那么早。”/“不，他本来没有必要来那么早的。”
三、后接动词进行式的用法
有时后接进行式表示动作正在进行：
We
needn’t
be
waiting
here.
我们不必在这里等。
We
needn’t
be
standing
here
in
the
rain.
我们没有必要站在这里被雨淋。
四、needn’t
have
done与didn’t
need
to
do
前者主要表示某事已经做了，但后来觉得没必要去做，因此常含有责备或遗憾之意；后者则不具体表明某事是否做了(即可能做了也可能没有做，此用法中的need为实意动词)：
I
got
up
early,
but
I
needn’t
have
done
so,
because
I
had
no
work
to
do
that
morning.
我起床起得很早，但我本来不必起那么早的，因为我那天早上没什么事做。
I
didn’t
need
to
get
up
early
this
morning,
so
I
stayed
in
bed
until
9
am.
今天早上我不必早起，所以我一直睡到上午九点钟才起床。
若没有特定的上下文，有时可能有歧义：
I
didn’t
need
to
go
the
office
yesterday.
(1)
我昨天无需去那儿。(所以没去)(=I
didn’t
have
to
go
there
yesterday.)
(2)
我昨天本来不必去那儿的。(但我却去了)(=I
needn’t
have
gone
there
yesterday.)
need可用实意动词和情态动词，用作情态动词时，意思是“有必要”或“需要”，其后接动词原形，通常只用于否定句或疑问句以及if或whether之后，一般不用于肯定句：
You
needn’t
do
all
these
exercises.
你不需要做所有这些练习。
Need
he
do
it
all
at
once?
他需要立即做这一切吗?
Need
they
have
done
it
yesterday?
这事他们需要昨天做吗?
Do
you
think
you
need
tell
her
about
it?
你认为有必要告诉她这件事吗?
I
wonder
if
I
need
bring
my
mosquito-net.
不知我需不需要带蚊帐。
【注】(1)
由于用作情态动词的need通常不用于肯定句，所以对于以need开头的疑问句的否定回答可用needn’t，但是肯定回答却不能用Yes,
you
need之类的，应根据具体情况改用其他表达：
"Need
he
stay
here?"
"Yes,
he
must."
“他有必要留在这儿吗?”“是的，必须留在这儿。”
(2)
need有时用于含有only,
all
等表限制意义的肯定句中：
This
is
the
only
form
you
need
fill
in.
你要填的只有这一张表。
All
you
need
do
is
to
take
a
taxi
from
the
airport.
你只需从机场打个的即可。
二、后接动词完成式的用法
若要谈论过去情况，应在其后接动词完成式：
You
needn’t
have
mentioned
it.
你没有必要提及此事的。
You
needn’t
have
come
in
person.
你当时不必亲自来的。
Need
you
have
paid
so
much?
你当时真需付那么多钱吗?
【注】(1)
在宾语从句中可直接用need表示过去(也可用didn’t
have
to)：
He
said
he
need
not
[didn’t
have
to]
hurry.
他说他不必匆忙。
(2)
注意对“need+have+过去分词”结构疑问式的回答：
"Need
he
have
come
so
early?"
"Yes,
he
had
to."
/
"No,
he
needn’t
have."“他来那么早有必要吗?”“有必要，他必须来那么早。”/“不，他本来没有必要来那么早的。”
三、后接动词进行式的用法
有时后接进行式表示动作正在进行：
We
needn’t
be
waiting
here.
我们不必在这里等。
We
needn’t
be
standing
here
in
the
rain.
我们没有必要站在这里被雨淋。
四、needn’t
have
done与didn’t
need
to
do
前者主要表示某事已经做了，但后来觉得没必要去做，因此常含有责备或遗憾之意；后者则不具体表明某事是否做了(即可能做了也可能没有做，此用法中的need为实意动词)：
I
got
up
early,
but
I
needn’t
have
done
so,
because
I
had
no
work
to
do
that
morning.
我起床起得很早，但我本来不必起那么早的，因为我那天早上没什么事做。
I
didn’t
need
to
get
up
early
this
morning,
so
I
stayed
in
bed
until
9
am.
今天早上我不必早起，所以我一直睡到上午九点钟才起床。
若没有特定的上下文，有时可能有歧义：
I
didn’t
need
to
go
the
office
yesterday.
(1)
我昨天无需去那儿。(所以没去)(=I
didn’t
have
to
go
there
yesterday.)
(2)
我昨天本来不必去那儿的。(但我却去了)(=I
needn’t
have
gone
there
yesterday.)
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作情态动词“需要”，后面跟动词原形。
作实义动词用法：某人＋need＋to do
某物＋need＋doing
He needs to drink some water.
The watch needs repairing.
作实义动词用法：某人＋need＋to do
某物＋need＋doing
He needs to drink some water.
The watch needs repairing.
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