YOU SAID:

i walk to the store and i bought milk

INTO JAPANESE

私は店に歩いて牛乳を買いました

BACK INTO ENGLISH

I walked to the store and bought milk

INTO JAPANESE

お店に行って牛乳を買いました

BACK INTO ENGLISH

I went to the store and bought some milk

INTO JAPANESE

お店に行って牛乳を買いました

BACK INTO ENGLISH

I went to the store and bought some milk