Tenses >> Present continuous

Structure of present continuous
I'm (I am) reading a book.	I'm (I am) not reading.	Are you reading?
He's (he is) reading a book.	He is not (he's not/he isn't) reading a book.	Is he reading a book?

Present continuous - common mistakes
Common mistakes	Correct version	Why?
They still waiting for you.	They are still waiting for you.	to form a continuous tense we use be + -ing.
They are still waiting for you?	Are they still waiting for you?	In questions the subject (they) and the auxiliary verb (be) change places.
Do they still waiting for you?	Are they still waiting for you?
Where they are waiting for you?	Where are they waiting for you?
She doesn't watching TV.	She isn't watching TV.	To form the negative we put not after the verb be (am not, is not = isn't, are not = aren't).
I'm believing you.	I believe you.	Some verbs are not used in continuous tenses - these are called stative verbs (e.g. believe, come from, cost, depend, exist, feel, hate, like).

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