音标:[i'fektiv] ; 柯林斯词典等级:4 级; 牛津三千核心词汇;
a. 有效的, 有力的, 实际的
n. 有生力量
a. producing or capable of producing an intended result or having a striking effect
s. able to accomplish a purpose; functioning effectively
s. works well as a means or remedy
s. exerting force or influence

考试类型:[四级/六级/考研/托福/IELTS]
词性分布:
形容词100%

effective的用法和样例:

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。

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

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?

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