active形容词，活泼的，积极的；actively副词，活泼地，积极地；动词：act。activity为名词，意思为：活动；行动；活跃。例句：For lovers of the great outdoors，activities range from canoeing to bird watching。对于户外活动的爱好者们来说，有从划船到观鸟的各种活动。

activity：英[ækˈtɪvɪtɪ]；美[ækˈtɪvətɪ]

n.活动；行动；活跃

For lovers of the great outdoors,activities range from canoeing to bird watching.

对于户外活动的爱好者们来说，有从划船到观鸟的各种活动。

act：英[ækt]；美[ækt]

n.行为，行动；法案，法令；假装

v.做事，行动；假装；扮演

A patient will usually listen to the doctor's advice and act on it.

病人通常会听从医生的建议并且按照它行动。

1、act的基本意思是“行动”，指人或事物对所期待的行为、作用或对外来影响作出反应的方式等。

2、act用作不及物动词，常用于询问行动具体性质的疑问句中和带有状语性修饰语或形容词补足语的陈述句中。

3、act可用作系动词，接名词或形容词作表语，意思是“装成”“显得”。

4、act泛指“演戏”解时是不及物动词，作“扮演(戏剧或影视中某角色)”解时用作及物动词。用作不及物动词时也可以“戏”作主语。

Is the property or any part thereof used for commercial activity?

这一房产或其中任何部分有用于商业活动吗？

Cooperative activity is essential to effective community work.

要把社区工作做好，协作活动是必不可少的。

There is a full range of activities for children.

这里有给孩子们提供的各种活动。

Make use of the toys in structured group activities.

在精心安排的分组活动中可以使用这些玩具。

The activities help children to develop a sense of their own worth.

这些活动有助于儿童培养自身的价值感。

It was a period of intense activity.

那是活动激烈的时期。

Activities all take place under the guidance of an experienced tutor.

所有活动都在经验丰富的导师指导下进行。

Economic activity often follows a cyclical pattern.

经济活动常常遵循周期性模式。

He watched for signs of activity in the house.

他注视着那所房子里的动静。

Even in prison,he continued to engage in criminal activities.

他甚至在监狱里还继续从事犯罪活动。

The whole place was a scene of feverish activity.

整个地方都是一片紧张匆忙的景象。

He watched the house for signs of activity.

他注视着那所房子里的动静。

She was kept in ignorance of her husband's activities.

关于丈夫的活动，她一直蒙在鼓里。

Some of the commercial activities were a cover for espionage.

有些商业活动是为间谍活动提供掩护。

Muscles contract and relax during physical activity.

身体活动时肌肉收缩放松。

She's involved in many extra-curricular activities.

她参加了许多课外活动。

There was a conflict of interest between his business dealings and his political activities.

他的商务交往与政治活动之间存在着利益冲突。

The centre offers activities like canoeing and sailing and such.

这个中心开展划艇、帆船之类的活动。

Details of his criminal activities were expunged from the file.

他犯罪活动的详细情况已从档案中删去。

Fund-raising is peripheral to their main activities.

对他们的主要活动而言，筹集资金是次要的。