/ni:d ||; nid/modal verb (not used in the continuous tenses; used mainly in questions or negative sentences after if and whether, or with words like hardly, only, never 不用于进行时；主要用于疑问句或否定句的if或whether后，或与hardly、only、never等词连用) to have to; to be obliged to 一定要；必须要: Need we pay the whole amount now? 我们是不是现在就须缴付全额呢？You needn't come to the meeting if you're too busy. 如果你太忙的话就不一定要来开会。I hardly need remind you (= you already know) that this is very serious. 我想你自己也明白这是十分严重的事。 The present tense is need in all persons; the negative form is need not (needn't), the question form is need I ?, etc 现在时的所有人称都是need；否定式是need not(needn't)，疑问式是need I?等 When talking about the past, needn't have with a past participle shows that you did something but discovered after doing it that it was not necessary I needn't have gone to the hospital (= I went but it wasn't necessary). Didn't need to with an infinitive usually means that you did not do sth because you already knew that it was not necessary I didn't need to go to the hospital (= I didn't go because it wasn't necessary).For more information about modal verbs, look at the Quick Grammar Reference section at the back of this dictionary. 谈论过去的时候，needn't have加上后面的过去分词表示做了某事，但后来又发现没有必要：I needn't have gone to the hospital.我其实用不着去医院（我去了，但是没有必要）。didn't need to加上后面的不定式通常表示没有做某事，因为你早已知道没有必要：I didn't need to go to the hospital.我不需要去医院（我没有去，因为没有必要）。有关情态动词的详细用法，参看本词典末“语法便览”部份。

/ni:d ||; nid/noun