shopping mall

I buy a suit at the mall.

私は商業施設で背広を買います

I buy a suit on sale at the mall.

私は商業施設で割引販売中の背広を買います

I buy a suit on sale at the mall that just opened.

私は新しくできた商業施設で割引販売中の背広を買います

I buy a suit on sale at the mall that just opened with my sister.

私は姉と新しくできた商業施設で割引販売中の背広を買います

I buy a suit on sale at the mall that just opened with my sister on Saturday afternoon.

私は土曜日の午後に姉と新しくできた商業施設で割引販売中の背広を買います