effective, efficient

• his teaching was not very effective.
  他的教學(xué)效果不好。
• the new interest rate becomes effective next month.
  新利息下月生效。
• when is the contract effective from?
  合同什么時候開始生效?
• this medicine, taken in time, can be very effective.
  這種藥如果及時吃會很有效。
• my headache is much better. those tablets really are effective.
  我的頭疼好多了，那些藥片的確很有效。

• he needs an efficient secretary.
  他需要一個高效率的秘書。
• the staff was very efficient.
  工作人員效率很高。
• a good manager is both competent and efficient.
  一個好的經(jīng)理既要勝任又要效率的秘書。
• the diesel engine is highly efficient.
  這臺柴油機效率很高。
• our efficient new machines are much cheaper to run.
  我們高效率的新機器開起來要便宜得多。

形容詞 effective:

1. producing or capable of producing an intended result or having a striking effect
   同義詞：effectual, efficacious
2. able to accomplish a purpose; functioning effectively
   同義詞：efficient
3. works well as a means or remedy
4. exerting force or influence
   同義詞：good, in effect, in force
5. existing in fact; not theoretical; real
6. ready for service

1. This country lacks an effective party of the centre.
   這個國家缺少一個能起作用的中立黨派。
2. The president promised swift and effective retribution against the terrorists.
   總統(tǒng)答應(yīng)會迅速有效地懲罰恐怖分子。
3. Advertising is often the most effective method of promotion.
   做廣告往往是最有效的推銷方法。
4. Effective defence is a matter of intercepting their missiles before they can reach us.
   有效的防衛(wèi)是不待對方導(dǎo)彈擊中我們而先行將其攔截。
5. Commercial television is an effective medium for advertising.
   商業(yè)電視是有效的廣告宣傳工具。
6. Their efforts to improve the production have been very effective.
   他們提高生產(chǎn)力的措施卓有成效。
7. That's rather an effective use of color.
   這種使用顏色的手法效果相當好。
8. When does the new system become effective?
   新制度何時生效？

ef.fec.tive

adj.（形容詞）

Having an intended or expected effect.
有效的：具有預(yù)期或先見效果的
Producing a strong impression or response; striking:
深刻印象的，驚人的：產(chǎn)生一種深刻印象或反應(yīng)的；顯著的：
例句：
gave an effective performance as Othello.
他在奧賽羅的演出令人印象深刻

Operative; in effect:
有效的：實施中；生效的：
例句：
The law is effective immediately.
這項法律立即生效

Existing in fact; actual:
實在的，實際的：事實存在的；事實上的：
例句：
a decline in the effective demand.
實際需求下降

Prepared for use or action, especially in warfare.
有戰(zhàn)斗力的，備戰(zhàn)的：為使用或行動準備的，尤指在戰(zhàn)爭中
n.（名詞）
A soldier or a piece of military equipment that is ready for combat:
戰(zhàn)斗力：為戰(zhàn)斗作好準備的士兵或某一軍事設(shè)備：
例句：
.The ‘company’ was no more than two platoons of effectives.(Tom Clancy)
.‘連’是不超過兩排的步兵.(湯姆·克蘭西)

【引伸】
effec.tiveness 或
ef.fectiv.ity
n.（名詞）
<參考詞匯><同義詞>effective,effectual,efficacious,efficientThe central meaning shared by these adjectives is .producing or capable of producing a desired effect.:
這些形容詞的中心意義是.產(chǎn)生或能產(chǎn)生期望的結(jié)果.：
例句：
an effective reprimand;
收效的懲戒；

例句：
an effectual complaint;
有效的批評；

例句：
an efficacious remedy;
靈驗的藥物；

例句：
the efficient cause of the revolution. ineffective
革命的有效原因 ineffective