因为that在从句中作gave的宾语,that代替的是the reason,如果用两句话来表示,则：He gave the reason for this.What is the reason?在问您一问the reason什么时候后面有why 和because引导啊？拜托救人一命胜作7级佛陀啊！谢谢谢谢谢谢啦！the reason后面一般用why引导定语从句，不用because，because不能引导定语从句。