happen与come about的区别两个的意义接近,但come about多与how连用,而happen多与what连用,这是不是它们唯一的区别?还有其它用法上的区别吗?当句子为陈述句时,没有what和how时,happen和come about

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happen与comeabout的区别两个的意义接近,但comeabout多与how连用,而happen多与what连用,这是不是它们唯一的区别?还有其它用法上的区别吗?当句子为陈述句时,没有what

happen与come about的区别两个的意义接近,但come about多与how连用,而happen多与what连用,这是不是它们唯一的区别?还有其它用法上的区别吗?当句子为陈述句时,没有what和how时,happen和come about
happen与come about的区别
两个的意义接近,但come about多与how连用,而happen多与what连用,这是不是它们唯一的区别?还有其它用法上的区别吗?当句子为陈述句时,没有what和how时,happen和come about是不是能互换?

happen与come about的区别两个的意义接近,但come about多与how连用,而happen多与what连用,这是不是它们唯一的区别?还有其它用法上的区别吗?当句子为陈述句时,没有what和how时,happen和come about
两个都做“发生”用的时候是没什么区别的.
只是come about还有“ 改变方向”的意思
不是的,得看具体句子.
How did this come about?这事是怎么发生的?
中this已经是主语,就不会用what.
what happened?中what就是主语.
你说Tell me what came about.也行的.
how can this happened?这怎么可能发生了?也行的.
(1)take place 一般指非偶然性事件的“发生”,即这种事件的发生一定有某种原因或事先的安排,例如:
Great changes have taken place in our hometown during the past ten years.
The Olympic Games of 2008 will take place in Beijing.
(2)happen一般用于偶然或突发性事件,例如:
What happened to you?(一般不说:What did you happen?)
Maybe something unexpected happened.
I happened to see him on my way home.= It happened that I saw him on my way home.
(3)come about表示“发生、产生”,多指事情已经发生了,但还不知道为什么,常用于疑问句和否定句,例如:
When Mother woke up,she didn’t know what had come about.
I’ll never understand how it came about that you were late three times a week.
Do you know how the air accident came about?