Need 的用法我怎么就分不清它的情态和实意呢?

Need 的用法我怎么就分不清它的情态和实意呢?
Need 的用法
我怎么就分不清它的情态和实意呢?

Need 的用法我怎么就分不清它的情态和实意呢?
“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.

n.
1. 需要;必要;需求;要求[S][(+of/for)][+to-v]
We have no need to be afraid of them.
我们不必怕他们。
2. 必要之物;需求[P1]
3. 贫穷;困窘;危急[U]
My neighbors helped me in my time of need.
我的邻居在我困难的日子帮了...

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n.
1. 需要;必要;需求;要求[S][(+of/for)][+to-v]
We have no need to be afraid of them.
我们不必怕他们。
2. 必要之物;需求[P1]
3. 贫穷;困窘;危急[U]
My neighbors helped me in my time of need.
我的邻居在我困难的日子帮了我忙。
vt.
1. 需要,有...必要[W][+to-v][+v-ing][O2][O4][O7]
The garden needs watering.
花园该浇水了。
I don't think you need to worry about this.
我认为你不必为这事担心。
They need our help.
他们需要我们帮助。
vi.
1. 生活穷困
v.aux.
1. (多用于疑问句和否定句)需要,必须
Need you go so soon?
你需要这么早走吗 ?
You needn't trouble about that.
你不必为这费事了。

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I got up early，but I ____ so，because I had no work to do that morning．
A．needn't do B．needn't have done
C．didn't need do D．didn't...

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I got up early，but I ____ so，because I had no work to do that morning．
A．needn't do B．needn't have done
C．didn't need do D．didn't need to do
此题应选B。为了弄清此题，首先我们要知道need有情态动词和实义动词两种用法。一般说来，这两种用法在意思上没有什么差别，只是用法差别较大：
他必须去那儿吗？
正：Need he go there？（need为情态动词）
正：Does he need to go there？（need为实义动词）
但有时候两种用法在意思上也有较大差别：
1．a．He needn't be told．没有必要告诉他。
b．He doesn't need to be told．不需要告诉他了。
（即：他已知道了）
2．didn't need to do/needn't have done：前者表示因为没有做某事的必要，所以没有去做；后者表示某事已经做了，但后来觉得没有必要去做，含有责备或遗憾之味：
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9点才起床。
That computer was expensive，and what's more，I didn't need to buy such a good one．那台电脑很贵，况且我也没有必要买那样好一台电脑。
I was the first to get there．I needn't have gone there so ear- ly．我是第一个到那儿的人，我本来不必去那么早的。

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