what is the present perfect tense
the present perfect tense is formed from the present tense of the verb have so we use have
or has depending on the subject and something called the past participle of the verb
for example we can say i have changed she has read the book here we see we have our verb have i have
or she has and then the past participle form of the next verb i have changed she has read
so when can we use present perfect tense well there are a few different ways
we can use present perfect for something that started in the past and continues in the present
so started in the past and continues today i have lived in korea for seven
years so it started in the past and it continues today i still live in korea
we can use the present perfect for something that happened in the past but is important
now in the present i can't study because i have lost my book so this happened in the past but
it's important to what's happening right now i can't study because i have lost my book
we can also use the present perfect when we're talking about
our experience up to the current time up to the present i've seen that film
i have seen that film this is what we're going to focus on today
let's learn how to use the present perfect to talk about our experience and our achievements
let's begin by looking at what these two words mean what is an experience and what is
an achievement today when we are looking at an experience we're going to focus on
work experience so this means work that you have done in the past any experience you have working
so this means from the past until now your experience how about the word achievement
and achievement is something you accomplish like a big goal so we can also use
present perfect to talk about your achievements things that you have done that you feel proud of
this is how we can form sentences using the present perfect tense so we start with our
subject i you we they he she it or someone's name have or has depending on the subject
remember that for he she and it we use has then we have our past participle
so sometimes the past participle looks like normal past tense but we have some different forms in
here as well like studied worked won been and managed and then we have the rest of our sentence
so let's look at these sentences where we are using present perfect to talk about experience
number one i have studied at university this is experience and it is relevant to work right i have
studied at university you could also say what you have studied i have studied english at university
number two you have worked for five
years so we can use have worked to talk about how long as well you have worked for five years
how about an achievement we have won a competition this is something you might use in an interview
for example to talk about your accomplishment or your achievement
related to the work or job you're applying for number four they have been to the conference
and number five he has managed or she has managed 10 people so these are all examples of sentences
and also past participles we can use when talking about experience using the present perfect tense
we can also add not or never to make the sentence negative so let's see what that would look like
here we have our same sentences but now we have added not and never i have not
studied at university or again you can add the subject i have not studied english at university
you have not worked for five years we have never won a competition they have not been
to the conference and he or she has never managed 10 people so notice that not and never go in the
same place in these sentences when we're using present perfect tense i have not i have never