题目内容：

请问为什么选A Tom is very tired ,He needs ( ) a good sleep.A :to have B :have

优质解答

need可作实义动词或情态动词当它做情态动词时,用法与can,could,will等词的用法相同,则原句就为He need have a good sleep.而原句中的need后加了s,为单三形式,说明它是作为实义动词使用的,和一般动词的用法一样则为He...