effective

英 [ɪ'fektɪv] 美 [ɪ'fektɪv]

• adj. 有效的；生效的；实际的

双解释义

adj. (形容词)

1. 有效的; 生效的

   producing the desired result; in operation

2. 事实上的,实际的

   actual; real

3. 给人印象深刻的

   having a noticeable or desired effect

详尽释义

adj. 形容词

1. 有效（力）的，生效的，起作用的，产生预期结果的
2. 实际的，事实上的
3. 有力的
4. 灵验的
5. 显眼的，给人深刻印象的
6. 被实施的
7. 【军】有战斗力的，精锐的
8. 【经】实质上的
9. 有实价的
10. 高效率的

n. 名词

1. 实际可作战的部队
2. 有生力量
3. 【军】现役兵额
4. 精兵
5. 部队，有生力量

英英释义

Adjective:

1. producing or capable of producing an intended result or having a striking effect;

   "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"
   "effective teaching methods"
   "effective steps toward peace"
   "made an effective entrance"
   "his complaint proved to be effectual in bringing action"
   "an efficacious law"
   

2. able to accomplish a purpose; functioning effectively;

   "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."
   "effective personnel"
   "an efficient secretary"
   "the efficient cause of the revolution"
   

3. works well as a means or remedy;

   "an effective reprimand"
   "a lotion that is effective in cases of prickly heat"
   

4. exerting force or influence;

   "the law is effective immediately"
   "a warranty good for two years"
   "the law is already in effect (or in force)"
   

5. existing in fact; not theoretical; real;

   "a decline in the effective demand"
   "confused increased equipment and expenditure with the quantity of effective work done"
   

6. ready for service;

   "the fort was held by about 100 effective soldiers"
   

例句

用作形容词 (adj.)

1. Advertising is often the most effective method of promotion.
   做广告往往是最有效的推销方法。
2. Their efforts to improve the production have been very effective.
   他们提高生产力的措施卓有成效。
3. When does the new system become effective?
   新制度何时生效？
4. Her brother is the king, but she is the effective ruler.
   她的兄弟是国王, 但她才是实际的主宰者。
5. Last year saw a decline in the effective demand for steel.
   去年,钢铁的实际需求下降了。

常见句型

用作形容词 (adj.)

用作定语

～+ n.

1. These are effective measures.
   这些都是有效的措施。
2. The medicine is an effective cure for a headache.
   这药治头痛疗效很好。
3. Her brother is the king, but she is the effective ruler.
   她的兄弟是国王,但她才是实际的主宰者。
4. The book has a very effective closing chapter.
   这本书的结尾一章给人印象极深。

用作表语

S+be+～

1. The law became effective last month.
   这条法律于上个月生效。
2. That display is very effective.
   那个展览使人赏心悦目。

S+be+～+ prep .-phrase

1. The medicine is effective against cancer.
   这药物治癌有效。
2. The clothes are effective in keeping cool in warm weather.
   热天穿淡色衣服使人凉爽。

经典引文

• He judged that..silence would be more effective than speech.

  出自： C. S. Forester

• Four effective, if not brilliant, items of software.

  出自：Which Micro?

词汇搭配

用作形容词 (adj.)

～+介词

• be effective against 有抗…效力的
• effective from 从…生效

词语用法

adj. (形容词)

1. effective强调产生实际效果的能力,无比较级和最高级。

词义辨析

adj. (形容词)

effective, effectual, efficacious, efficient

• 这四个形容词都有“(能够)生效”的含意。effective强调效用,意为“有效的”,可用于人或事物; effectual强调效果,意为“(最终)奏效的”,一般不用于人; efficacious强调效验,意为“灵验的”,不用于人,多表示药物和治疗的效果; efficient强调功效,意为“有成效的,效率高的”,可用于人或事,指人表示“能干的”,指方法、机器表示“收效大的”。

effective，efficient

• 这两个形容词很容易混淆。
• effective表示有效用的。
• efficient表示“效率高的”，可指人。

词源解说

• ☆ 14世纪晚进入英语，直接源自法语的effectif；最初源自拉丁语的effectivus，意为生产的。

近反义词

【近义词】

• efficient
• capable
• impressive

【反义词】

• ineffective
• incompetent
• useless