was playing; was joking
O gato estava brincando com um rato vivo.
The cat was playing with a live mouse.
Eu acho que Tom estava brincando.
I think Tom was joking.
O Tom não estava brincando.
Tom wasn't kidding.
Eu só estava brincando quando disse isso.
I was just kidding when I said that.
Diga a Tom que eu só estava brincando.
Tell Tom I was just kidding.
Pensei que ele estava brincando.
I thought he was joking.
Ele estava brincando com um isqueiro.
He was playing with a lighter.
Tom estava brincando no quintal.
Tom was playing in the backyard.
O menino estava brincando no parque.
The boy was playing in the park.