effective
- 英式英标[ɪ\'fɛktɪv]
- 美式音标[ɪ\'fektɪv]
adj. 有效的，起作用的；实际的，实在的；给人深刻印象
中文词源
effective 有效的
来自effect, 效果。
英文词源
- 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.
中文解释
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.
实用例句
- 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。
来自柯林斯例句
- 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
