Grammar
What is the present perfect tense used for?
The present perfect tense is used to describe an action that started in the past and continues up to the present, or an action that happened at an unspecified time in the past and has a connection to the present.
I ______ (visit) my grandmother three times this year.
have visited
I ______ (not/see) my friend since last summer.
have not seen
_____ you _____ (not/see) that movie yet?
Have you not seen that movie yet?
You have visited the Grand Canyon.
Right
How is the present perfect tense formed?
The present perfect tense is formed with the auxiliary verb "has" or "have" + the past participle of the main verb (e.g. "I have eaten", "she has written").
She ______ (finish) her report on time.
has finished
She ______ (not/finish) her homework yet.
has not finished
How many books ____________________ you read this year?
How many books have you read this year?
She has learned English for five years.
RIGHT
What is the difference between the present perfect simple and the present perfect continuous?
The present perfect simple (e.g. "I have eaten") emphasizes the completion of an action, while the present perfect continuous (e.g. "I have been eating") emphasizes the duration of an action.
They ______ (see) that new movie already.
have seen
They ______ (not/travel) abroad before.
have not traveled
How much money ____________________ you saved for your trip?
How much money have you saved for your trip?
She has saw that movie five times.
WRONG She has seen that movie five times.
When do we use "has" and when do we use "have" in the present perfect tense?
We use "has" with singular subjects (e.g. "he", "she", "it") and "have" with plural subjects (e.g. "they", "we", "you").
He ______ (complete) the project ahead of schedule.
has completed
He ______ (not/eat) breakfast today
has not eaten
How many languages ____________________ you studied?
How many languages have you studied?
He has did his homework already.
WRONG He has done his homework already.
How do we form negative sentences in the present perfect tense?
We form negative sentences in the present perfect tense by adding "not" after the auxiliary verb "has" or "have" (e.g. "I have not eaten", "she has not written").
We ______ (go) to Japan twice.
Have gone
I ______(not/eat) breakfast yet
have not eaten
How many countries ____________________ you traveled to?
How many countries have you traveled to?
She have played tennis every weekend last year.
She played tennis every weekend last year.