need是实义动词吗?

如题所述

need既可以作情态动词,也可以作实义动词,还可以作名词,各自的用法不同。

一、need作情态动词时,表“必须,必要”,其用法为:

    后直接跟动词原形,need+do,否定needn't+do。

    need无人称、数的变化,第三人称单数不加s,也没有非谓语形式。

    注意:need用作情态动词时,常用语否定句和疑问句中。

    must引导的一般疑问句的否定回答,必须使用needn't,肯定回答用must。

二、need作实义动词的用法:

    need+something(名词)需要某物

    need to do something 需要做某事

    need doing=need to be done 需要……

    need somebody to do something 需要某人做某事

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第1个回答  2024-01-21
need可以是实义动词,也可以是情态动词,还可以是名词
要根据具体语境
1.做实义动词时,主语是人后跟动词不定式 即人+need to do sth
物作主语时后跟动名词或动词不定式的被动语态,即物+need doing sth / 物+need to be done

It's very cold, you need to wear warm clothes.
天气很冷,你需要穿暖和的衣服。
Your shoes are dirty, they need washing.

Your shoes are dirty, they need to be washed.
你的鞋子脏了,需要洗了。
2.作情态动词时后跟动词原形,一般用于否定句和疑问句

Must i finish it now,?No, you needn't.
3. There's no need to tell him about it.
没有必要告诉他这件事。