YOU SAID:

my dad wants to eat chips

INTO JAPANESE

私の父がチップを食べたいです。

BACK INTO ENGLISH

My father wanted to eat chips.

INTO JAPANESE

私の父は、チップを食べていました。

BACK INTO ENGLISH

My father was eating chips.

INTO JAPANESE

私の父は、チップを食べていた。

BACK INTO ENGLISH

My father was eating chips.