efficiently adv. 有效率地；效率高地
(教材P31)Learning efficiently 有效地学习
It is hard to work efficiently in such a confined space.
在这样狭小的空间里工作很难提高效率。
efficient adj. 有效率的；效率高的
efficiency n. 效率；效能，功效
effective adj. 有效的
This is a highly efficient new heating system.
这是个高效的新取暖系统。
Advertising is often the most effective method of promotion.做广告往往是最有效的推销方法。
完成句子
①他总是为自己的工作而骄傲。他是个很能干的人。
He always takes pride in his work.He's very __________________
②我认为你得采取有效措施。
I think you'll have to take ________ steps.
③我们必须尽快地提高工作效率。
We must improve our ________ as soon as possible.
