The accident ————on the morning of July 1.A happenedB has happenedC was happenedD was happen不及物动词就没有完成时？有一段时间用完成具体过去时间用过去？

The accident ————on the morning of July 1.A happenedB has happenedC was happenedD was happen不及物动词就没有完成时？有一段时间用完成具体过去时间用过去？
The accident ————on the morning of July 1.
A happened
B has happened
C was happened
D was happen
不及物动词就没有完成时？
有一段时间用完成
具体过去时间用过去？

The accident ————on the morning of July 1.A happenedB has happenedC was happenedD was happen不及物动词就没有完成时？有一段时间用完成具体过去时间用过去？
A
1、happen无被动
2、“on” the morning of July 1.是具体的“时间点”,发生在过去,用过去时
3、完成时用在“一段”时间,后面的介词不用on,用since.有时也用for

A

a

a

A

A
happen没有被动（take place也一样），按时间来说已经是过去时，当然只能选A了 。

A

选A，happen是不及物动词，没有被动语态，所以不选CD，而后面有具体的日期所以是过去时，而不是现在完成时，绝对是选A

英语语法：不及物动词有完成时，但是无被动式；现在完成时的肯定句和一段时间状语连用时必须用持续性动词
A happen 是不及物动词，所以无被动语态，排除C,D
并且happen是瞬时性动词，一般不用于完成时
从麦克米伦字典中查寻：你会发现，里面没有任何的被动用法和完成时用法
happen verb [intransitive]
to take pla...

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英语语法：不及物动词有完成时，但是无被动式；现在完成时的肯定句和一段时间状语连用时必须用持续性动词
A happen 是不及物动词，所以无被动语态，排除C,D
并且happen是瞬时性动词，一般不用于完成时
从麦克米伦字典中查寻：你会发现，里面没有任何的被动用法和完成时用法
happen verb [intransitive]
to take place, usually without being planned:
The accident happened at 4.30 pm yesterday.
He seemed to be unaware of what was happening around him.
What happens if I press this button?
see what happens: Let's just wait and see what happens.
as it happens/it (just so) happens that SPOKEN
used for saying that something is true, although it is surprising:
As it happens, I've got a bike I can lend you.
happen to do something
1 to do something by chance:
I happened to meet an old friend in town.
2 SPOKEN used for asking something politely:
Do you happen to have a pen I can borrow?
3 SPOKEN used for expressing an opinion firmly, because you are angry:
I happen to live here too – don't leave your rubbish everywhere!
these things happen
used for telling someone not to be upset about something unpleasant that has happened or something bad they have done
whatever happens
used for saying that nothing will change a situation or fact:
Whatever happens tomorrow, this experience has been worth the effort.
happen along or happen by phrasal verb [intransitive] OLD-FASHIONED
to come to a particular place without planning to
happen on or happen upon phrasal verb [transitive] OLD-FASHIONED
happen on someone/something to meet someone or find something without planning to
happen to [transitive]
happen to someone if something happens to you, an event or action takes place which affects you:
This is the best thing that's ever happened to me.
a. happen to something used for talking about the way something changes or develops:
We don't understand what is happening to the economy.
if anything happens to someone
used as a way of avoiding talking directly about something bad that might take place:
I'd never forgive myself if anything has happened to her because I didn't go to meet her.
If anything happens to me (=if I die), you'll have plenty of money to live on.
what (has) happened to something SPOKEN
used for asking where something is:
What's happened to the newspaper that was on the table?
what/whatever happened to someone
used for asking where someone is now and what they are doing:
Whatever happened to your friend George?
what/whatever happened to something SPOKEN
used for asking why something does not happen or exist now:
Whatever happened to the idea of being innocent until proven guilty?

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