作助动词意思是需要，必须（无时态、人称变化，后与不带 to 的动词不定式连用，多用于疑问句和否定句）。
1、need critically 极为重要地需要
2、need desperately 不顾一切地需要
3、need directly 直接地需要
4、need economically 经济上地需要
5、need genuinely 真正地需要
6、need horribly 惊人地需要
7、need imperatively 紧急地需要
8、need sorely 非常需要
英 [ni?d] 美 [nid]
in need of需要…时
V-T If you need something, or need to do something, you cannot successfully achieve what you want or live properly without it. 需要
He desperately needed money.
I need to make a phone call.
I need you to do something for me.
I need you here, Wally.
N-COUNT Need is also a noun. 需要
Charles has never felt the need to compete with anyone.
...the child who never had his need for attention and importance satisfied.
V-T If an object or place needs something done to it, that action should be done to improve the object or place. If a task needs doing, it should be done to improve a particular situation. 需要
The building needs quite a few repairs.
...a garden that needs tidying.
N-SING If there is a need for something, that thing would improve a situation or something cannot happen without it. 需要; 必要
Mr. Forrest believes there is a need for other similar schools throughout the country.
"I think we should see a specialist."—"I don't think there's any need for that."
V-T If you say that someone does not need to do something, you are telling them not to do it, or advising or suggesting that they should not do it. 必要 (用于劝告或建议)
Well, for Heaven's sake, you don't need to apologize.
MODAL Need is also a modal. 必要 (用于劝告或建议)
"I'll put the key in the window."—"You needn't bother," he said gruffly.
Look, you needn't shout.
V-T If you tell someone that they don't need to do something, or that something need not happen, you are telling them that that thing is not necessary, in order to make them feel better. 一定 (用于劝告或建议)
He replied, with a reassuring smile, "Oh, you don't need to worry about them."
MODAL Need is also a modal. 一定 (用于劝告或建议)
You needn't worry.
We have learned that a market crash need not lead to economic disaster.
V-T You use don't need to when you are giving someone permission not to do something. 否定词后接(need to)，表示允许不做某事
You don't need to wait for me.
MODAL Need is also a modal. (Need)也作情态动词
You needn't come again, if you don't want to.
MODAL If someone needn't have done something, they didn't need to do it. 本不需要
She could have made the sandwich herself; her mother needn't have bothered to do anything.
I was a little nervous when I announced my engagement to Grace, but I needn't have worried.
V-T If someone didn't need to do something, it wasn't necessary or useful for them to do it, although they did it. 本不需要
You didn't need to give me any more money you know, but thank you.
MODAL You use need in expressions such as I need hardly say and I needn't add to emphasize that the person you are talking to already knows what you are going to say. 用于(I need hardly say)和(I needn't add)短语中，强调对方已然知晓将要说的话强调
I needn't add that if you fail to do as I ask, you will suffer the consequences.
V-T Need is also a verb. (Need)亦为动词
I hardly need to say that I have never lost contact with him.
PHRASE People in need do not have enough of essential things such as money, food, or good health. 需要帮助的
The portable clinic will take doctors to children in need.
PHRASE If you are in need of something, you need it or ought to have it. 需要
I was all right but in need of rest.
He was badly in need of a shave.
PHRASE If you say that you will do something, especially an extreme action, if need be, you mean that you will do if it is necessary. 需要的话
They will act as my legal advisers if need be.
n.需要; 需要的东西; 责任; 贫穷;
I think you need new glasses.