Occur at the Moment of Speaking, Temporary, Specied Time, Now
(+) Subject + To be + Verb (ing) + Complement (Object / Adverb of Time)
(-) Subject + To be + Not + Verb (ing) + Complement.
(?) To be + Subject + Verb (ing) + Complement.
Adverb of Time :
Now, Right Now, At The Moment, Presently, Currenly
Today, Tonight, This Afternoon, This Week, This Semester.
(+) Today, I am visiting Factory with my manager.
(-) Today, I am not Visiting Factory with my manager.
(?) Are you visiting Factory with your manager today?