YOU SAID:

When I look out the window, I see the trees swaying in the wind and the sky turning dark

INTO JAPANESE

窓の外を見ると木々が風に揺れ、空が暗くなっていきます

BACK INTO ENGLISH

When I look out the window, the trees are swaying in the wind and the sky is getting darker.

INTO JAPANESE

窓の外を見ると木々が風に揺れ、空は暗くなってきました。

BACK INTO ENGLISH

When I looked out the window, the trees were swaying in the wind and the sky was getting dark.

INTO JAPANESE

窓の外を見ると木々が風に揺れ、空は暗くなってきました。

BACK INTO ENGLISH

When I looked out the window, the trees were swaying in the wind and the sky was getting dark.