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My English improved a lot this year.
My English has improved a lot this year.
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My cousin has worked here for January.
My cousin has worked here since January.
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They have known my cousins since three days.
They have known my cousins for three days.
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When I was 6 years old, I have got a bicycle for Christmas.
When I was 6 years old, I got a bicycle for Christmas.
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My parents live in a house they have bought 7 years ago.
My parents live in a house they bought 7 years ago.
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My father didn’t smoke since he suffered a heart attack.
My father hasn't smoked since he suffered a heart attack.
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I’ve seen that programme on television last night.
I saw that programme on television last night.
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Did you ever taste black quinoa?
Have you ever tasted black quinoa?
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Have you studied German when you were at school?
Did you study German when you were at school?
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He didn’t learn the irregular past participles yet.
He hasn't learned the irregular past participles yet.
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I had a headache since I woke up this morning.
I've had a headache since I woke up this morning.
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Jack has worked here between 2010 and 2012.
Jack worked here between 2010 and 2012.
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