10 percent families or 10% families family 做主语谓语动词的单复数取决于它的意思。如果把它看作一个整体，谓语用单数；看作是个体，谓语动词用复数。 His family is poor but is united. His family were watching TV when I went to see him yesterday
one tenths of families 这是10分之1的意思 表示几分之几就是 分子 分母(序数词 数字+th）of 名词 若名词为复数 则分母后加s．例如５分之３家庭的：three fifths of families.
ten percent of families或ten hundredths of families家庭和后面的谓语动词都用复数，因为family是可数名词
10 percent of families 此时后的谓语动词用复数
10 percent families 谓语动词用单数
10 percent families
答：does,过去式--did详情>>
答：英雄(hero)爱吃番茄(tomato)和土豆(potato) 哪有英雄弹钢琴的理儿???详情>>
