We will work hard all our lives那That taxi driver is Xiao Hong's uncle.咋变复数一定要变、而且实际上也存在的话：Those taxi drivers are Xiao Hong's uncles哈哈。棒棒。自己也变对了谢谢还有这个They young women are all in white trousers,咋变单数The young woman is in white trouserstrousers这里不需要变吗？不能变，裤子与袜子等一样，成双的话，都是复数（老外把一条裤子也看成一双（可能因为有2裤管））