history可数吗
history既是可数名词也是不可数名词，历史，史学；来历,沿革,由来；过去的事，过时的事物不可数。历史书，履历;病历;经历可数。
1、[U] 历史（指过去发生的所有事情）
all the events that happened in the past
a turning point in human history
人类历史的一个转折点
one of the worst disasters in recent history
近代史上最大的灾难之一
a people with no sense of history
一个没有历史感的民族
Many people throughout history have dreamt of a world without war.
历史上有很多人梦想过没有战争的世界。
The area was inhabited long before the dawn of recorded history (= before people wrote about events) .
早在有历史记载之前很久这个地区就有人居住了。
These events changed the course of history .
这些事件改变了历史的进程。
2、[sing., U] （有关某个地方、主题等的）发展史，历史
the past events concerned in the development of a particular place, subject, etc.
the history of Ireland/democracy/popular music
爱尔兰 / 民主 / 流行音乐的历史
The local history of the area is fascinating.
这个地区的历史很有意思。
The school traces its history back to 1865.
这个学校的历史可以追溯到1865年。
3、[U] 历史课；历史学
the study of past events as a subject at school or university
a history teacher
历史老师
a degree in History
历史学学位
social/economic/political history
社会 / 经济 / 政治史
ancient/medieval/modern history
古代 / 中世纪 / 近代史
She's studying art history .
她正在研读艺术史。
see also natural history
4、[C] 历史（指历史记载或历史传说）
a written or spoken account of past events
She's writing a new history of Europe.
她正在写一部新的欧洲史。
She went on to catalogue a long history of disasters.
接下来她列举了一长串灾难。
5、[sing.] ~ (of sth)（某人的）履历，经历；家族史；（某地的）沿革
a record of sth happening frequently in the past life of a person, family or place; the set of facts that are known about sb's past life
He has a history of violent crime.
他有暴力犯罪的前科。
There is a history of heart disease in my family.
我家有家族心脏病史。
a patient's medical history
病人的病历
