YOU SAID:
I just fell down the stairs
INTO JAPANESE
私はちょうど階段から落ちてください。
BACK INTO ENGLISH
I should just fell down the stairs.
INTO JAPANESE
私は階段から落ちただけする必要があります。
BACK INTO ENGLISH
I must just fell down the stairs.
INTO JAPANESE
私は階段から落ちただけする必要があります。
BACK INTO ENGLISH
I must just fell down the stairs.
That didn't even make that much sense in English.