Itisalready10o'clock.Iwonderhowitthatshewastwohourslateonsuchashorttrip.答案是cameabout即”发生”,但是我认为cameup也可以,它们都有发生的意思,有什么区别呢?

Question

It is already 10 o'clock.Iwonder how it _____that she was two hours late on such a short trip.
答案是came about 即”发生”,但是我认为came up也可以,它们都有发生的意思,有什么区别呢?

Answer 1

1.come about 发生,产生,出现
无被动语态.
记住这一点：
常用句型：How did it come about that从句?“.事是怎么发生的?”
2.come up v.
1）走近,上来,发芽,流行,发生,被提出
2）上升,讨论,出现
如：Please come up to me!
The problem came up at the meeting yesterday.