YOU SAID:
i will drink this coffee
INTO JAPANESE
私はこのコーヒーを飲みます
BACK INTO ENGLISH
I have this coffee
INTO JAPANESE
私はこのコーヒーを飲んでいます
BACK INTO ENGLISH
I am drinking this coffee
INTO JAPANESE
私はこのコーヒーを飲んでいます
BACK INTO ENGLISH
I am drinking this coffee
That didn't even make that much sense in English.