the reason why——这就是.的原因,是针对前面的疑问或情况进行阐述,表明最直接,最主要的原因. the reason that——原因是,表示一部分或全部原因,可以是直接的也可以是间接的次要原因. why和that都引导了reason的定语从句,但是一般我们从句意上分析,如果表示的是“做什么事的原因”之类,就用why;如果是“事情本身引起的原因”之类,就用that. 不知道你明白了没有,
reason 的定语从句中的关系代词。例如,I want to know the reason why he was sent to the hospital. 我想知道他为什么被送到医院.(是问被送到医院的原因 ) I know the reason that he was ill.我知道原因是他病了(that引导的从句是the reason同位语)
I don’t know the reason _____you were absent from the meeting, but I am sure that someone will tell me the reason ______ you haven't told me. A. why; that B. that; why C. because; wh...