定语从句中如果是 there be 句型 先行词为人时可以用that做关系词吗...答:四、如果先行词是time, moment, place, reason, way, direction, distance等时,常用that引导的定语从句代替介词+which或when,where,why等,且that常省略:Eg. I’d like to know the reason (that/why/for which) you change the plan.五、As作关系代词引导的限制性定语从句中,只用于和the same,...