YOU SAID:

when did you shower last?

INTO JAPANESE

最後にシャワーを浴びたのはいつですか。

BACK INTO ENGLISH

When was the last time you took a shower?

INTO JAPANESE

最後にシャワー浴びたのはいつ？

BACK INTO ENGLISH

And when was the last time you took a shower?

INTO JAPANESE

最後にシャワー浴びたのはいつ？

BACK INTO ENGLISH

And when was the last time you took a shower?