Past simple vs Past continuous

​What happened?

• ​I cut myself while I was peeling a carrot.

• ​While I was peeling a carrot, I cut myself.

​What happened?

• ​I burnt my toaster while I was making breakfast.

• ​While I was making breakfast, I burnt my toaster.

​What happened?

• ​It was raining when the cars crashed.​

• ​When the cars crashed, it was raining.

​What happened?

• ​He was watching the game when he fell off the chair.​

• ​When he fell off the chair, he was watching the game.

S + V2

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​S + was, were + V.ing