need的用法• 表示“需要”时为实意动词，后面可以加名词，也可以加不定式：I need a pen.

Do you need any beer? No, I don’t.

I need to have a rest.Need doing=need to be done (表示被动)The flowers need watering. =The flowers need to be watered. 花需要浇水。• need在否定时做情态动词使用：You needn’t go so early. (=You don’t need to go so early.)

Must I clean the desk right now? No, you needn’t.