YOU SAID:

i knew u were trouble when u walked in

INTO JAPANESE

私はあなたが入ったときにあなたが困っていることを知っていました

BACK INTO ENGLISH

I knew you were in trouble when you entered

INTO JAPANESE

あなたが入ったときあなたが困っていることを私は知っていました

BACK INTO ENGLISH

I knew you were in trouble when you entered