YOU SAID:
please can I have a coffee?
INTO JAPANESE
コーヒーをいただけますか。
BACK INTO ENGLISH
Can I have some coffee.
INTO JAPANESE
コーヒーを飲めますか。
BACK INTO ENGLISH
Can you drink coffee?
INTO JAPANESE
あなたはコーヒーを飲むことができますか?
BACK INTO ENGLISH
Can you drink coffee?
You've done this before, haven't you.