容易混淆的介系詞
1. 表達時間
(a) at(指點鐘、正午或午夜)
例：at two o’clock , at noon(正午), at midnight(午夜)
(b) in(指月份、年代、季節、早上或下午)
例：in May, in 1850, in summer, in the morning, in the afternoon.
(c) on(指某月某日，星期)
例：on May 20, on Friday
2. 表達地方
(a) at(指點的觀念，表示“在某點附近”)
例：at the bus stop, at the door
(b) on(指帄面，表示“在…上面”)
例：on the roof, on the horse
(c) in(指空間，表示“在…裡面”)
例：in the classroom, in a box, in the drawer
此外，世界上一些大都會城市亦用“in”，如in New York, in London, in Tokyo, in Taipei。
(d) across(越過)—through(穿過)(across指帄面，through指空間)
例：
1.They built a bridge across the river.
2.The train went through a tunnel(隧道)
3. at 還可用以表達價錢、速度、高度及年齡。
例：
at the price (cost) of (以…價格)
at the speed of (以…的速度)
at full speed(全速)
at the height of(…的高度)
at the age of(…的年齡)
4. beside(在…之旁)—besides(除了…之外)
例：
1.He is sitting beside the window.
2.There were three other people at the meeting besides Mr. Jones.
5. across 越過(介系詞)—cross越過(動詞)
例：
1.They walked across the street.
2.They crossed the street.
6. between (兩者之間)—among(三者以上之間)
