Present Perfect Simple
The affirmative 2rd person singular of the verb to walk
You have walked
The affirmative 1st person singular of the verb to play
I have been playing
The past simple of the verb to eat
ate
Verbal tense used after the word "did" in the past simple
the present simple
The negative 3rd person plural of the verb to close
They haven't closed
The negative 3rd person singular of the verb to type
He/She/It hasn't been typing
The past perfect simple of the verb to think
had thought
The use of the past perfect simple
to link the past and the present
The question form of the 1st person plural of the verb to drink
Have we drunk?
The question form of the 2nd person plural of the verb to study
Have you been studying?
The past participle 1st person singular of the verb to be
was
The use of the past perfect continuous
between 'before-now' and 'now'