a student once said how useless it was to put advertisements in the newspapers.为什么不用uselessly

问题描述:

a student once said how useless it was to put advertisements in the newspapers.为什么不用uselessly

因为useless是形容词,这里how引导的小从句是感叹形容词的,意思是:在报纸上打广告完全没有用,所以应该用形容词,而不用副词。

回答 how useless it was?
可以说it was very useless
显然useless做形容词而不是副词