FLOWER OF INTELLIGENCE

(+) S + to be (is,am,are) + v-ing + O + adverb of time
(-) S + to be + not + v-ing + O + adverb of time
(?) To be + S + v-ing + O + adverb of time
Example:
(+) Putri is sleeping right now.
(-) I am not reading right now
(?) Is she writing a letter?

Usage
Expresses an activity that is in progress at the moment of speaking.
Example:
She is reading a book.
The students are sitting at their desk right now.
I am dreaming about you.

Something generally in progress this week, this month, this year.
Example:
I am taking four courses this semester.
She is taking a rest this week.

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