lack

lack, need, want, require

lack, want, absence, shortage, scarcity

名词 lack:

1. the state of needing something that is absent or unavailable
   同义词：deficiency, want

动词 lack:

1. be without
   同义词：miss

1. The accused got off/escaped scot-free because of lack of evidence.
   由於证据不足，被告未受惩罚。
2. Fixed wages and lack of promotion act as a disincentive to employees.
   工资固定又无晋升机会遏制了雇员的积极性。
3. Her decision seems to show a lack of political judgement.
   她的决定似乎显示出缺乏政治判断力。
4. Lack of sun retards plant growth.
   光照不足则植物生长缓慢。
5. Lack of evidence resulted in their acquittal.
   因证据不足而宣判他们无罪。
6. The plant died for lack of water.
   植物因缺水而枯死了。
7. He is good at his job but he seems to lack confidence.
   他工作不错，但似乎缺乏信心。

lack

n.（名词）
A deficiency or an absence:
缺乏或没有：
例句：
a lack of money.
缺乏金钱

Something needed or wanted.
欠缺的事物：缺乏或寻求的某物
v.（动词）
lacked,lack.ing,lacks
v.tr.（及物动词）
To be entirely without or have very little of.
缺乏：根本就没有或仅有一点
To be in need of.
需要
v.intr.（不及物动词）
To be wanting or deficient:
缺乏：处于匮乏或不足状态：
例句：
You will not be lacking in support from me.
你将得到我的帮助

To be in need of something:
需要：需要某物：
例句：
I lacked for nothing.
我不需要任何东西

来源：
Middle English
中古英语
perhaps from Middle Dutch lac [deficiency, fault]
可能源自 中古荷兰语 lac [缺乏，缺陷]

<参考词汇><同义词>lack,want,needThese verbs mean to be without something,especially something that is necessary or desirable.
这些动词的意思是没有某物，尤指该物是必须的或是合乎需要的。
Lack emphasizes the absence of the thing in question or the inadequacy of its supply:
Lack 强调的必须品的缺乏或其供应的不足：
例句：
She lacks the money to buy new shoes.
她没钱买新鞋。

例句：
The plant died because it lacked moisture.
这株植物因为缺乏水分而死。

例句：
What he lacks in courage he compensates for in bravado.
他用虚张声势来弥补自己勇气的匮乏。

Want andneed stress the urgent necessity for filling a void or remedying an inadequacy:
Want 和need 强调的是填补空白或弥补不足的迫切性：
例句：
.Her pens were uniformly bad and wanted fixing. (Bret Harte).
.她的钢笔都坏了，需要修理. （布莱特·哈特）。

例句：
I need help.
我需要帮助。

例句：
The garden needs care.
花园需要人照管。

例句：
.Only when he has ceased to need things can a man truly be his own master and so really exist. (Anwar el-Sadat).
.只有当一个人惭惭地对外物无所求时，他才可能成为他自己真正的主人并因此而真实地存在. （安瓦尔·埃尔·萨达特）

As an intransitive verbin the sense .to be wanting or deficient,.lack is used chiefly in the present participle with in:
作为一个不及物动词，用于.缺乏或缺少.之意的lack 主要和 in一起用于现在分词中：
例句：
You will not be lacking in support from me.
你会得到我的帮助。

In the sense .to be in need of something.it is often used withfor:
当意思是.需要某物.时，它经常与for连用：
例句：
.In the terrible, beautiful age of my prime,/I lacked for sweet linen but never for time. (E.B. White).
.在我可怕而又美丽的壮年岁月中，／我需要的是亚麻布而从来不是时间. （E．B．怀特）