This English lesson is about using present perfect and past simple tenses in English.
These two tenses are very common yet many learners of English have trouble perfecting their use.
The Present Perfect tense connects the past with the now and there is no specific time reference to when what you are talking about occurred.
Fred has broken his arm so he can't play football tomorrow.
Their train has arrived so they should be here soon.
Present perfect with 'ever', 'yet', 'just' 'before', etc.
We also use the present perfect with words like 'ever', 'yet', 'just', 'before'.
I have never been to Italy before. I would like to go there soon.
She has just eaten lunch.
I haven't finished my homework yet.
The present perfect also answers the question 'how long'?
How long has David lived in London? David has lived in London for two years.
The past simple is used when the event started and finished in the past. There is no connection to the present.
I went to London in 1991.
He broke his arm at training last week.
I spent all of my youth in Australia.
When he saw his boss he decided to ask her for a raise.
Here's another grammar lesson for you to look at.
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