mention the formula(+,-,?) of simple present continous tense

PRESENT CONTINOUS TENSE
Answer :
Formula :
(+) S + tobe + v + ing + o/c
(-) S + tobe + not + v + ing + o/c
(?) Tobe + s + v + ing + o/c + ?

Ex :
(+) She is smiling at me
(-) She isn't smiling at me
(?) Is she smiling at me?

Present continuous tense
+ s + tobe +v. Ing +(time signal) = now. Right now. At this dll
- s + tobe + not + v. Ing + (t. S)

Ex : i am speaking English now
I am not speaking English now.
Am i speaking engkish now

Passive nya
+ s + tobe +being +v3 + by + object +complement +time signal

Ex: active : i studying english now
Passive : english is being studied by me now