(1)作实义动词,意为“需要”。有人称和数的变化。
<1> need sth. 需要某物
I need your help.
我需要你的帮助。
<2> sb. need(s) to do sth. 某人需要做某事
We need to tell him the truth.
我们需要告诉他真相。
<3> sth. need(s)doing =sth. need(s)to be done 某事需要被做
My car needs repairing .=My car needs to be repaired.
我的汽车需要修理。
(2)作情态动词,意为“需要”,后接动词原形,常用于疑问句或否定句中。在must 引导的一般疑问句中,其肯定回答用must,否定回答用needn’t 或don’t have to.
Must we clean the classroom every day?
我们必须每天打扫教室吗?
No, you needn’t./Yes, you must.
不,你们不必。/是的,你们必须(每天打扫)。
(3)作名词,意为“需要;需求”。常用于:in (great)need of (急)需要……;meet the need of… 满足……的需要;there is no need (for sb.)to do sth. (某人)没必要做某事。
The poor are in great need of food.
这些穷人急需食物。
Let’s have a try.