energetic的名词形式为energy。energetic作为形容词，含义为“精力充沛的”、“需要能量的”、“积极的”；energy作为名词形式，含义为“能量”、“精力”、“干劲”、“力量”。
一、energetic的基本含义及用法介绍
energetic作为形容词，意为精力充沛的;充满活力的;需要能量的;积极的。
例句：The heart responds well to energetic exercise.
心脏对剧烈运动反应良好。
Ten year-olds are incredibly energetic.
10岁的孩子精力格外旺盛。
Her mother was a resourceful and energetic woman.
她母亲是一个足智多谋、精力充沛的女人。
He knew I was energetic and dynamic and would get things done.
他知道我精力充沛、生气勃勃，会把事情办成的。
I think I'd prefer something a little less energetic.
我想我更喜欢不太剧烈的活动。
For the more energetic, we offer windsurfing and ping.
对喜欢剧烈运动者，我们有冲浪和潜水运动。
British history of the 19th century is peopled by energetic reformers
19世纪英国史上积极改革者层出不穷。
The elderly woman is still quite energetic.
这位上了年纪的老妇人仍然精力充沛。
二、energy的基本意思及用法介绍
energy作为名词，是可数名词，意为能量;能源;精力;活力;干劲;力量。
例句：It's a waste of time and energy.
那是浪费时间和精力。
She put all her energies into her work.
她把全部精力都投入到工作中去了。
It is important to conserve energy.
节能十分重要。
He was saving his energy for next week's race in Belgium...
他正为下周在比利时的比赛养精蓄锐。
At 54 years old her energy and looks are magnificent...
她54岁了，精力和气色都非常好。
She had started to devote her energies to teaching rather than performing...
她已经开始将精力从表演转移到教学中。
