YOU SAID:

It would be fun but my mother invited me to dinner.

INTO JAPANESE

それは楽しいだろうが、私の母が食事に招いてくれた。

BACK INTO ENGLISH

Would it's fun, but my mother had invited me to dinner.

INTO JAPANESE

それは楽しいのだろうが、私の母は、夕食に私を招待していた。

BACK INTO ENGLISH

It would be fun, but my mother invited me to dinner.

INTO JAPANESE

楽しかったですが、母は私を夕食に招待しました。

BACK INTO ENGLISH

It was fun, but my mother invited me to dinner.

INTO JAPANESE

楽しかったですが、母は私を夕食に招待しました。

BACK INTO ENGLISH

It was fun, but my mother invited me to dinner.