◆知识归纳
1.It takes a very unusual mind to undertake the analysis of the obvious.
(1)It takes (sb.) sth. to do 做某事需要或花费某人某事物
在该句型中sth.不仅可以是“时间”也可以是“勇气、毅力，决心等抽象名词”take意为“花费、需要”。
It took me five years to wrote a novel.
用去我五年的时间来写完这本小说。
It takes two to make a quarrel.
一个巴掌拍不响。
(2)undertake 的用法：
①试图;着手做;进行,从事
We undertook a trip to the west.
我们到西部作了一次旅行。
