effective
                
          英 [?'fekt?v]
美 [?'f?kt?v]
        
                
          
            - adj. 有效的,起作用的;實際的,實在的;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、結束(finish, end)之意。
2. meaning: 事情做完了,事情做結束了. => work out, accomplish.
3. => 引申為:事情做完、做結束后的結果、效果、作用、影響等。
4. 做動詞就表示:生效、完成、實現、達到、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,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. 
- 女性有時被認為不善于管理。
來自柯林斯例句
 
- 4. The initial image projected was of a caring, effective president. 
- 他最初表現出的是一個充滿愛心、辦事有效的總統形象。
來自柯林斯例句
 
- 5. The bank must be run in a cost-effective way. 
- 銀行的經營必須追求成本效益。
來自柯林斯例句