1. over:

　　l)在……上方：

　　A lamp was hanging over the table.

　　一盏灯悬在方桌上方。

　　He saw an arched stone bridge over the river.

　　他看到河上有一座石头拱桥。

　　She saw a water bird flying over the lake.

　　她看到一只水鸟从湖上飞过。

　　2)在(从……)上面：

　　She spread a cloth over the table.

　　她在桌上铺了一块桌布。

　　She wore a white shawl over her shoulders.

　　她肩上披着一条白披巾。

　　A hovercraft goes over land and water.

　　气垫船可以在陆地和水上行走。

　　3)为……，对:

　　It is no use crying over split milk.

　　牛奶洒了哭也无用。(谚)

　　We are deeply grieved over his death.

　　为他的逝世我们感到深切的悲痛。

　　There has been much discussion over the question.

　　对这个问题大家有不少的讨论。

　　4)在……(时期)中：

　　These are the main things we have learned over the past few years.

　　这是我们过去几年里学到的主要东西。

　　Over the past few years they have consistently gathered in good harvests.

　　过去几年他们的收成一直很好。

　　He came to town over the weekend.

　　他周末时进城来了。

　　5)多于，不止(表示数量):

　　Over 1，000 people attended the memorial meeting.

　　一千多人参加了追悼会。

　　He talked for over half an hour.

　　他谈了半个多钟头。

　　The girl is a little over five.

　　这女孩有五岁多一点。

　　6)比……高(增长):

　　Their income increased by 21 per cent over that of the previous year

　　他们的收入比头一年增长百分之二十一。

　　The output value in the first quarter was 10 per cent over the same period last year.

　　第一季度产值比去年同期高百分之十。

　　7) 还可用于某些成语:

　　7 over 4.

　　四分之七(即7/4)

　　Not just once, but over and over again.

　　不可能只跌倒一次，而是反复重复。