YOU SAID:

Let's have a nice walk with my dog and my mom and dad and brother

INTO JAPANESE

Let's 散歩私の犬と私のママとパパと弟とがあります。

BACK INTO ENGLISH

Let's walk my dog and my mom and dad and brother.

INTO JAPANESE

私の犬と私のママとパパと弟を歩いてみましょう。

BACK INTO ENGLISH

My dog and my mom and dad and brother to walk.

INTO JAPANESE

私の犬とお母さんとお父さんと歩く弟。

BACK INTO ENGLISH

Walking my dog and my mom and dad and brother.

INTO JAPANESE

私の犬と私のママとパパと弟を歩きます。

BACK INTO ENGLISH

My dog and my mom and dad and brother to walk.

INTO JAPANESE

私の犬とお母さんとお父さんと歩く弟。

BACK INTO ENGLISH

Walking my dog and my mom and dad and brother.

INTO JAPANESE

私の犬と私のママとパパと弟を歩きます。