need的用法
1、作情態(tài)動(dòng)詞:通常用在疑問(wèn)句、否定句中,或與條件句、whether, hardly, nobody等連用。如:
Need he go so soon?他這麼快就要走嗎?
He needn't go. 他不必走。
If she wants anything, she need only ask. 她想要什麼, 衹需說(shuō)一聲就行。
He wondered whether they need go there. 他不知道他們是否需要去那裡。
Nobody need be afraid of catching the disease. 誰(shuí)都不用害怕能得這種病.
注意:
1)因 need 不能用於肯定句,因此肯定廻答要用 must。如:
—Need I stay here any longer? 我需要在這呆下去嗎?
—No, you needn't. 不需要。
—Yes, you must. 是的,需要呆下去。
2)need have done 的否定式或疑問(wèn)式,表示“本來(lái)不必做某事,但事實(shí)上卻做了”。如:
She needn't have come in person a call would have been enough. 她本不必親自來(lái)——打個(gè)電話來(lái)就足可以了。
Need you have paid so much?你儅時(shí)真須要付那麼多錢嗎?
2、作行爲(wèi)動(dòng)詞:可用於疑問(wèn)句、否定句和肯定句。如:
Does he need to go so soon?他這麼快就要走嗎?
He doesn't need to go. 他不需要走。
He needs to go. 他想走。
They need our help. 他們需要我們幫助。
注:作行爲(wèi)動(dòng)詞的need後可接動(dòng)名詞的主動(dòng)式表示被動(dòng)含義。如:
The garden needs watering(=to be watered) . 花園該澆水了。
3、還可作名詞:表示“需要, 必需, 必需品”等。如:
The doctor told me I was in need of a good rest. 毉生說(shuō)我需要好好休息。
There is no need for you to go. 你沒(méi)有必要去。
Our needs are modest. 我們的必需品是謙虛