the room needs to be big enough for three people物是主语不应该是need doing吗?
问题描述：
the room needs to be big enough for three people物是主语不应该是need doing吗?
答
need做实义动词的时候，后面接to do sth.而不是doing sth.
答
need doing 是被动语态
比如说： the table needs cleaning=the table needs to be cleaned.
答
你说的应该是The room need cleaning.这种用法.这里clean 与room是被动关系,房间时被打扫的.这句等于the room need to be cleaned.
你问的这个句子,room 和be big enough是主动关系.所以就用need to be big.