Li Ming is late, as is often the case中as为什么不能用which替代
问题描述：
Li Ming is late, as is often the case中as为什么不能用which替代
答
如果用which,只是替代了li ming 今天迟到的情况,而不是普遍的一个情况,而as指正如今天一样,他经常迟到
Li Ming is late, as is often the case中as为什么不能用which替代
如果用which,只是替代了li ming 今天迟到的情况,而不是普遍的一个情况,而as指正如今天一样,他经常迟到