Over作为副词使用，解释为：从直立位置向下和向外落下、倒下；从一侧到另一侧翻转、穿过。当作为介词时，又解释为：在…上面；悬在…上面；向…上方；从一边到另一边穿越。作为名词，解释为：一轮投球。

【adv.】over在短语动词中的特殊用法见有关动词词条。如take sth over在词条take的短语动词部分。

1、从直立位置向下和向外;落下;倒下

Try not to knock that vase over.

小心别把花瓶碰倒了。

2、从一侧到另一侧;翻转

She turned over onto her front.

她翻过身俯卧着。

3、穿过(街道、开阔的空间等)

I stopped and crossed over.

我先停下来，然后走到对面。

Put it down over there.

把东西放到那边去。

4、完全覆盖(某人或某物)

The lake was frozen over.

湖面完全封冻了。

5、以上;大于;多于

children of 14 and over

14岁及14岁以上的儿童

6、剩余的;未用的;不需要的

If there's any food left over,put it in the fridge.

要是有剩下的饭菜，就放到冰箱里。

7、再;又

He repeated it several times over until he could remember it.

他重复了几遍直到能记住为止。

8、结束

By the time we arrived the meeting was over.

我们到达时，会议已经结束了。

9、(表示位置变换)改变，掉换

He's gone over to the enemy(=joined them).

他已变节投敌。

10、(用于无线通话)完毕

Message received.Over(=it is your turn to speak).

消息收到了。完毕。

习语

(all)over again

再;重新

He did the work so badly that I had to do it all over again myself.

他活做得太糟糕了，我只好亲自从头再做一次。

over against sth

与…对比(或相对)

in contrast with sth

over and over(again)

多次;反复地;一再

many times;repeatedly

I've told you over and over again not to do that.

我一再跟你讲不要再那么做。

over to you

轮到你了;该你了

【prep.】over在短语动词中的特殊用法见有关动词词条。如get over sth在词条get的短语动词部分。

1、(部分或全部覆盖)在…上面

She put a blanket over the sleeping child.

她给熟睡的孩子盖上毯子。

2、悬在…上面;向…上方

They held a large umbrella over her.

他们给她撑起一把大伞。

3、从一边到另一边;穿越

a bridge over the river

横跨河面的桥

4、在…的远端(或对面)

He lives over the road.

他住在马路对面。

5、到另一边;翻越

She climbed over the wall.

她翻过墙去。

6、从…落下

The car had toppled over the cliff.

汽车从山崖上跌落下去了。

7、遍及

Snow is falling all over the country.

全国各地都在下雪。

8、多于(某时间、数量、花费等)

over 3 million copies sold

售出三百多万册

He's over sixty.

他六十多岁了。

9、(表示能控制、有权威)

She has only the director over her.

她的上司只有主任一个。

10、在…期间

We'll discuss it over lunch.

我们吃午饭时商量此事吧。

11、渡过(困难阶段或局面)

We're over the worst of the recession.

我们已渡过了经济衰退的最艰难时期。

12、由于;关于

an argument over money

为了钱的争吵

a disagreement over the best way to proceed

在如何采用最好的方法上出现的分歧

13、利用;通过

We heard it over the radio.

我们从广播中听到的。

She wouldn't tell me over the phone.

她不肯在电话里告诉我。

14、声音大于

I couldn't hear what he said over the noise of the traffic.

交通噪声太大，我听不清他说的话。

【noun】

(in cricket板球)一轮投球(同一个投球手连续投出的六个球)

a series of six balls bowled by the same person