Ⅰ. discover “发现”发现的事物是本来存在的或是有人知道的。如:
① Columbus discovered America. 哥伦布发现了美洲。
② He discovered a box hidden under the floor. 他发现了一只藏在地板下箱子。
Ⅱ. invent “发明”, 发明的东西是从前没有的。如:
① Who invented the steam engine?谁发明了蒸汽机?
② He has invented a new way of making silk. 他发明了一种造丝的新方法。
Ⅲ. find “找到”指寻找的结果。是非延续性动词。如:
I am looking for my bike, but I may not find it. 我正在找我的自行车,可是不一定能找到。
Ⅳ. find out “找出、查明”指经过观察、调查把某事、某物查出来,搞清楚,弄明白。如:
When he was a child, he liked to find out how things worked. 他孩提时代时,就爱弄明白各种事物的来龙去脉。
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