that 从句的疑问形式.如Did it happen to you that you had been out when he called 中为何用did 看主...
问题描述：
that 从句的疑问形式.如Did it happen to you that you had been out when he called 中为何用did 看主...
that 从句的疑问形式.如Did it happen to you that you had been out when he called 中为何用did 看主句还是从句
答
该句意思为 有没有发生过他打电话时你正好在外边的情况?问的是过去有没有这样的情况 所以用过去时did
而had been out 发生在 he called之前,是过去的过去 所以用过去完成时.