YOU SAID:

when we saw the film about penguins, you were eating chips and your hands were dirty

INTO JAPANESE

ペンギンの映画を見た時、チップスを食べていて手が汚れていた

BACK INTO ENGLISH

When I saw the Penguin movie, my hands were dirty from eating chips

INTO JAPANESE

ペンギンの映画を見た時、ポテトチップスを食べて手が汚れた

BACK INTO ENGLISH

When I saw the Penguin movie, I ate potato chips and got my hands dirty.

INTO JAPANESE

ペンギンの映画を見たとき、ポテトチップスを食べて手を汚しました。

BACK INTO ENGLISH

When I saw the Penguin movie, I ate potato chips and got my hands dirty.