YOU SAID:

I have been waiting for the bus for six hours

INTO JAPANESE

私は6時間バスを待っている

BACK INTO ENGLISH

I've been waiting for the bus for six hours.

INTO JAPANESE

君を３時間も待っていたんだぞ。

BACK INTO ENGLISH

I've been waiting for you for three hours! [M]

INTO JAPANESE

君を３時間も待っていたんだぞ。

BACK INTO ENGLISH

I've been waiting for you for three hours! [M]