(1) 两个词均可用作“高过……;比……高”解。
- The water came up above/over our knees.
水没过了我们的双膝。 - Can you see the helicopter above/over the palace?
你能看见宫殿上空的那架直升机吗? 
(2) 当作“覆盖”(covering)和“越过”解时,通常用over。
- The plane was flying over Denmark.
飞机当时正飞越丹麦。 - There's thick cloud over that mountain.
浓云笼罩在那座山的上空。 
(3) 在与数字、数量或量词短语一起用时,较常用over(=more than)。
- There were over 100,000 people at the peace rally.
参加这次和平集会的有100000人以上。 - You have to be over 18 to see this film.
要看这部电影,你得过了18岁才行。 
(4) 但是,当所表示的量度是在垂直刻度尺上表示时,则使用above。
- The temperature is three degrees above zero.
温度是零上3度。 - She is well above average (=the middle of the scale) in intelligence.
她的智力大大超出一般水平。 
(5) 陆地高度是用above sea-level来表示的。
- The summit of Everest is over 8,000 meters above sea-level . (more than 8,000 meters higher than sea-level)
珠穆朗玛峰的海拔高度超过了8000米。 
注意:在书上或报纸上,see over 意为“见下页”(look on the next page);see above 意为“见前面”。
