effective
英 [?'fekt?v]
美 [?'f?kt?v]
- adj. 有效的，起作用的；實(shí)際的，實(shí)在的；給人深刻印象
助記提示
1. ef- "out" + fect-. 在這里取 out 的引申義：完成、結(jié)束(finish, end)之意。
2. meaning: 事情做完了，事情做結(jié)束了. => work out, accomplish.
3. => 引申為：事情做完、做結(jié)束后的結(jié)果、效果、作用、影響等。
4. 做動(dòng)詞就表示：生效、完成、實(shí)現(xiàn)、達(dá)到、造成等含義。
5. effect + -ive.
中文詞源
effective 有效的來自effect, 效果。
英文詞源
- 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.
雙語例句
- 1. Condoms are an effective method of birth control if used with care.
- 如果使用得當(dāng)，避孕套是很有效的避孕手段。
來自柯林斯例句
- 2. Light colours provide an effective backdrop for pictures or a mirror.
- 淺色是掛放圖畫或鏡子很有效果的襯托。
來自柯林斯例句
- 3. Women are sometimes seen to be less effective as managers.
- 女性有時(shí)被認(rèn)為不善于管理。
來自柯林斯例句
- 4. The initial image projected was of a caring, effective president.
- 他最初表現(xiàn)出的是一個(gè)充滿愛心、辦事有效的總統(tǒng)形象。
來自柯林斯例句
- 5. The bank must be run in a cost-effective way.
- 銀行的經(jīng)營(yíng)必須追求成本效益。
來自柯林斯例句