YOU SAID:
I've been falling... for 30 MINUTES!!!
INTO JAPANESE
私は落ちてきました.30分間!!!
BACK INTO ENGLISH
I've been falling for 30 minutes!!!
INTO JAPANESE
私は30分間落ちています!!!
BACK INTO ENGLISH
I have been falling for 30 minutes!!!
INTO JAPANESE
私は30分間落ちています!!!
BACK INTO ENGLISH
I have been falling for 30 minutes!!!
That didn't even make that much sense in English.