在定语从句中,the only one 后面是用that还是用答:用that 定语从句中只能用that 的情况:1)先行词是不定代词:all,few,little,much,something,nothing,anything等.All that we have to do is to practise every day.2)先行词被序数词或形容词最高级所修饰.The first lesson that I learned will never be forgotten.3)先行词被all,any,every,each...