-where were you when the UFO arrived?-I was _______ the library.A.at front of B.in front ofA.应该为at the front of
问题描述：
-where were you when the UFO arrived?-I was _______ the library.A.at front of B.in front of
A.应该为at the front of
答
where were you when the UFO arrived?-I was ___B the library.A. at front of B.in front of
.A. at the front of指在某个物体本身或范围之内的前部，仅指一个点而已，意为“在……前部”。
附：at front of表示什么在某个物体前面 二者是平行的关系
B in front of通常指物体或人位于另外的物体的外部的前面。
There are some trees in front of the house.
房子的前面有一些树。（树在房子外的前面
答
B in front of 在...前面
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答
in front of
答
B.in front of
答
选Bin front of,in the front of,at the front of,in front 这四个介词短语的涵义均与“在前面”有关,但用法区别在于：in front of通常相对于某物体的外部来说,指另外的物体或人位于该物前面,意为“在……前面”.如...