beside
英 [bɪˈsaɪd] 美 [bɪˈsaɪd]
在旁边（或附近）；与……相比
- On the table beside an empty plate was a pile of books.
桌上空盘子的旁边是一堆书。 - My painting looks childish beside yours.
同你的相比，我的画显得很幼稚。
behind
英 [bɪˈhaɪnd] 美 [bɪˈhaɪnd]
在（……的）后面；（遗留）在后面，（留）在原处；比……迟，比……慢，落后于；是……背后的原因
- Alex led, and I followed along behind.
亚历克斯带头，我紧随其后。 - After the party a few people stayed behind to help clean up.
晚会结束后，一些客人留下来帮助收拾打扫。 - He wondered what was behind his neighbour's sudden friendliness.
他疑惑为何邻居的态度突然友好起来。
below
英 [bɪˈləʊ] 美 [bɪˈloʊ]
在较低处，在某平面之下，（位置）低于；少于、小于、低于；
- From the top of the skyscraper the cars below us looked like insects.
从摩天大楼顶上往下看，下面的汽车小得像昆虫一样。 - His marks in English have been below average for some time now.
最近一段时间他的英语成绩一直低于平均水平。
before
英 [bɪˈfɔː(r)] 美 [bɪˈfɔːr]
在……之前、以前；直到……发生；以前、从前
- Before he could reach the door, she quickly closed it.
他还没走到门前她就迅速关上了门。 - It was an hour before the police arrived.
警察一小时后才赶到。 - He said he had never seen her before.
他说他以前从没见过她。
