YOU SAID:

im going to add some sugar to my coffee

INTO JAPANESE

私のコーヒーに砂糖を加えるつもり

BACK INTO ENGLISH

Are you going to add sugar to my coffee?

INTO JAPANESE

あなたは私のコーヒーに砂糖を加えるつもりですか?

BACK INTO ENGLISH

Are you going to add sugar to my coffee?