To describe what is happening at the moment we are talking (in other words, now this minute) we use the present continuous.
To make the present continuous positive we ude the verb 'to be' (am, are, is) and the verb root with the suffix -ing.
I am reading a book.
He is playing football.
We are watching TV.
To make the nagative, we put not between the verb 'to be' and the verb root with the suffix -ing. We use short forms as for verb 'to be'.
I'm not sleeping.
They are not singing.
They are not watchnig TV.
To make the question, we put the verb 'to be' before the personal pronoun (I, you, he, she, it, we, they) and then the verb root with the suffix -ing.
Are you cooking?
Is she playing tennis?
In short answers we do not repeat the verb root with the suffix -ing.
Are the cooking? No, the aren't. / Yes, they are.
When we add the suffix -ing, the spelling of some verbs changes.
With the verb ending in -e, the 'e' goes and we adding -ing.
dance - dancing come - coming
With one syllable verbs ending in a vowel and a consonant, we double the consonant and adding -ing.
sit - sitting run - running
With two-syllable verbs enging in a vowel and a consonant with the stress on the second syllable, we double the consonant and adding -ing.
begin - beginning (stress on the second syllable)
open - opening (stress on the first syllable)
With the verbs end with -l, we double the'l' and add -ing.
travel - travelling label - labelling
WHEN WE USE PRESENT CONTINUOUS TENSE?
We use the present continuous:
--> to describe an action that is hapenning now, at the moment when we are speaking
Dad is watching TV at the moment.
--> for something that is hapenning on a temporary basis, for a short time and not as usual
Maria is studying very hard these days. She has exams next week.
--> with time expressions such as now, at the moment, today, these days
Jill is packing her suitcase at the moment.
It's raining today.