YOU SAID:

He throws a stone to the windows.

INTO JAPANESE

彼は窓に石を投げます。

BACK INTO ENGLISH

He threw stones at the Windows.

INTO JAPANESE

彼は窓に石を投げた。

BACK INTO ENGLISH

He threw the stone in the window.

INTO JAPANESE

彼は窓に石を投げた。

BACK INTO ENGLISH

He threw the stone in the window.