Study page - Present perfect simple and continuous

Structure of present perfect
I've (I have) seen him.	I haven't (have not) seen him.	Have you seen him?
He's (he has) gone.	He hasn't (has not) gone.	Has he gone?

Structure of present perfect continuous
They've (They have) been living in this flat for more than five years.	Have they been living here for a long time?	They haven't (have not) been living in this flat for very long.

Present perfect simple - common mistakes
Common mistakes	Correct version	Why?
Steven has wrote a new book.	Steven has written a new book.	The past participle of the verb must be used - wrote is past simple, written is the past participle.
Did you have seen him before?	Have you seen him before?	The helping verb 'have' is used in the present perfect- it is inverted with the person (you have becomes have you).
I didn't have seen him before.	I haven't seen him before.	The helping verb 'have' is used in the present perfect- to make it negative we simply add not (n't).
I am here since last week.	I have been here since last week.	The present perfect is used to show an action which continues to the present (an unfinished action).
I've been knowing him for 5 years.	I've known him for 5 years.	Verbs such as know, want, like, etc. (stative verbs) suggest permanent states, not actions, so are used in the simple form, NOT the -ing form.

Present perfect continuous - common mistakes
Common mistakes	Correct version	Why?
It has been rain heavily all day.	It has been raining heavily all day.	The structure of present perfect continuous is have/has been -ing.
I have sat here for two hours.	I have been sitting here for two hours.	Verbs such as sit, wait, speak, etc. (non-stative verbs) suggest continuity and so are mostly used in the continuous (-ing) form.
Which? I have worked here for five years. I have been working here for 5 years.		When BOTH the simple and continuous form are possible, native speakers prefer to use the continuous.

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