YOU SAID:

The blue dog ran down the street and she saw a cop with his lights on

INTO JAPANESE

青い犬が通りを駆け下り、彼女は彼のライトが点灯している警官を見ました

BACK INTO ENGLISH

A blue dog ran down the street and she saw a policeman with his lights on

INTO JAPANESE

青い犬が通りを駆け下り、彼女は警官が彼のライトをつけているのを見ました

BACK INTO ENGLISH

A blue dog ran down the street and she saw a policeman turning on his light

INTO JAPANESE

青い犬が通りを駆け下り、警官が彼の明かりをつけているのを見た。

BACK INTO ENGLISH

I saw a blue dog running down the street and a policeman turning on his light.

INTO JAPANESE

青い犬が通りを走っていて、警官が彼の明かりをつけているのを見た。

BACK INTO ENGLISH

I saw a blue dog running down the street and a policeman turning on his light.