They arrived at a small house ____ there was an old tree.
问题描述：
They arrived at a small house ____ there was an old tree.
A.in front of which B.in the front of which
C.in which D.before that
答
A.in front of which,
这是一个重句,后面要说的是在一颗老树前,在什么以前只有 before 和 in front of
那么B和C就不是了
为什么不选D呢?before 是一个时间概念的,只能用于根时间有关的方面,比如各吃饭前,二年前
in front of却正好是用于什么物体前,是有位置概念的