During my Japanese classes, I saw two examples really similar :

  * 昨日、さとうさんは自転車で事故にあったけれども、怪我はしなかった。
  * 車で事故にあうと、怪我をします。

I don't understand why for the first one, the particle before する is は, and for
the second one it's を.
CC BY-SA 4.0
2021-05-19T13:28:43.630
86703
2021-05-19T13:28:43.630
39148
question
particles
How to choose を vs は