1.overlap指两个或两个以上的物或事物重叠在一起或同时发生,或指将一个物体叠放在另一物体之上,使之成为叠盖状态,即“交搭,叠盖”。
2.overlap可用作及物动词,也可用作不及物动词。用作及物动词时后接名词或代词作宾语。
3.overlap的过去式、过去分词均为overlapped。

用作不及物动词
▲S+～(+A)
His duties and mine overlap.他的任务和我的任务有重叠。
The treatment in these two books largely overlaps.这两本书的内容有很多重复。
History and politics overlap and should be studied together.历史与政治有相同之处,应该一起来研究。
Economics and politics are best studied together as the two subjects overlap.经济学和政治学有部分内容交叉,所以这两门课程最好一起研究。
His visit and mine overlapped.他的访问期和我的访问期有几天重叠。
用作及物动词
▲S+～+n./pron.
One feather overlaps another on a bird's wing.鸟翅膀上的羽毛一片压着一片。