effective与efficent的区别

两者意思根本不同，不属于近义词辨析。effective指“有效的”，是“有”与“没有”的范畴；efficient指“效率好的”，是“好”与“不好”的范畴。首先要effective，才能谈是否efficient．

前些天刚给学生区分过。
简单点说：effective表示有效的
efficient表示效率高的

efficiency
n.[U]
1. 效率;效能;功效
These machines have increased our work efficiency many times.
这些机器使我们的工作效率提高了许多倍。
2. 【物】效率

The new secretary is quick and _____. Since she came, the ______ of the department has been increased.
A. efficient, efficiency

B. efficiency, efficient

C. effective, effect

D. efficient, effect

答案与解析：A 这句主要考查了词类和近似词的区别。Efficient是形容词，意思是“效率高的”；而efficiency是名词，意思是“效率”。Effect是名词，“效果，结果”。Effective, “有效的”，一般是某物做主语，或者修饰“物”，比如：The new medicine is very effective in treating cough.

this new copy machine is more( )than the old one,which improves the ( )of work.
A effective,efficiency B effective,effect
C efficient,efficiency C efficient,effect

选c

前者是有效的,后者是效