effective

英 [ɪ'fektɪv] 美 [ɪ'fɛktɪv]
  • adj. 有效的,起作用的;实际的,实在的;给人深刻印象
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星级词汇:
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1. ef- "out" + fect-. 在这里取 out 的引申义:完成、结束(finish, end)之意。
2. meaning: 事情做完了,事情做结束了. => work out, accomplish.
3. => 引申为:事情做完、做结束后的结果、效果、作用、影响等。
4. 做动词就表示:生效、完成、实现、达到、造成等含义。
5. effect + -ive.
effective 有效的

来自effect, 效果。

effective (adj.)
late 14c., "serving to effect the intended purpose," from Old French effectif, from Latin effectivus "productive, effective," from effect-, stem of efficere (see effect (n.)). Of military forces, meaning "fit for action or duty" is from 1680s.
1. Condoms are an effective method of birth control if used with care.
如果使用得当,避孕套是很有效的避孕手段。

来自柯林斯例句

2. Light colours provide an effective backdrop for pictures or a mirror.
浅色是挂放图画或镜子很有效果的衬托。

来自柯林斯例句

3. Women are sometimes seen to be less effective as managers.
女性有时被认为不善于管理。

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4. The initial image projected was of a caring, effective president.
他最初表现出的是一个充满爱心、办事有效的总统形象。

来自柯林斯例句

5. The bank must be run in a cost-effective way.
银行的经营必须追求成本效益。

来自柯林斯例句