table manners的谓语动词用复数,因为manners是复数,例如:
He felt awkward the first time he had dinner in his American host family,because he didn't know hiw to use knief and fork. So, I say that table manners are very important.他第一次在美国的寄宿家里吃饭时,和尴尬,因为不知道怎样使用刀叉。所以,我说餐桌礼仪很重要(本句中,table nanners的谓语动词用了复数are)