YOU SAID:

i am going to the store to buy some milk

INTO JAPANESE

私はいくつかの牛乳を買うために店に行くよ

BACK INTO ENGLISH

I'm going to the store to buy some milk

INTO JAPANESE

牛乳を買いに店に行く

BACK INTO ENGLISH

Go to the store to buy milk

INTO JAPANESE

牛乳を買うために店に行く

BACK INTO ENGLISH

Go to the store to buy milk