您说的对，fool是名词，foolish是形容词，但名词可以做宾语，而形容词则不行的，只能做定语或表语。因此，fool可以做宾语，而foolish不行。如果用foolish做宾语的话，那必须在其前面加上the，就象the poor,和the rich一样，指一类人。请看例句：It is those who often do foolish things(act foolishly)that we usually call fools. Don't be foolish! How can you finish the work all by yourself?
答：He is a fool=He is foolish 都表示他很愚蠢．a fool 和foolish都是宾语． What a fool!＝What a fool...详情>>
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