YOU SAID:

I am wearing a blue coat

INTO JAPANESE

私は青いコートを着ています。

BACK INTO ENGLISH

I am wearing a blue coat.

INTO JAPANESE

彼女は青い上着を着ていた。

BACK INTO ENGLISH

She was wearing a blue coat.

INTO JAPANESE

彼女は青い上着を着ていた。

BACK INTO ENGLISH

She was wearing a blue coat.