YOU SAID:
Hi, would you like a coffee?
INTO JAPANESE
こんにちは、コーヒーはいかがですか?
BACK INTO ENGLISH
Hello, would you like some coffee?
INTO JAPANESE
こんにちは、コーヒーはいかがですか。
BACK INTO ENGLISH
Hello, would you like some coffee?
That didn't even make that much sense in English.