Mary is waiting ( ) the school gate.请问填什么介词.
问题描述：
Mary is waiting ( ) the school gate.请问填什么介词.
答
at + 地点
for + 谁
答
by
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for肯定错了= =
at我不是很确定。
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for后面是跟谁或者事情
at后面是地点
by后面是跟物品（包括门、窗）
因为gate是指门，门又没有里面，门的里面就是指房间或者反过来是走廊，所以you can't wait at the school gate...
答
at 在校门口处等待
答
for
答
Mary is waiting (for ) the school gate
wait for sth.等待.
答
at
at the school gate 固定搭配
答
at 这个要看后面的 school gate