I wrote the lesson. vs I have written the lesson.

[Nana2009]

hi everybody,,
here i have 2 sentences and i wanna know what the difference between them

i wrote the lesson.

i have written the lesson.

please i need explanation
thanxxxx

[Mixmixi]

Hi Nana,
In my opinion, they can be described by the following sentences:
First one: You wrote the lesson before and now there is not any sign of what you did in the present time.
Second one: You wrote the lesson before and it is available now in the present time.

Regards
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Let's make a deal; I'll correct every single one of your grammatical mistakes AND YOU DO THE SAME FAVOUR FOR ME.

[Nana2009]

thank you mixmixi for your explanation, i think as you said about the 2 sentences
sure i'll correct your mistakes if they're found.

[Mixmixi]

You're welcome my friend.
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Let's make a deal; I'll correct every single one of your grammatical mistakes AND YOU DO THE SAME FAVOUR FOR ME.

[Foah]

Hi ,

as I take it: The difference is the use of the Tenses.

Past Tense:
I wrote the lesson means that you started writing it and finished with it at a point of time in the past.

Present Perfect:
I have written the lesson would be the answer to the question: "What have you done the latter hour?" answer "I have written the lesson." Means you started it in the past and finished it at the current moment.

Michael
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[Shanthisethuraman]

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It is very easy if you know the correct meaning for past tense and present ptefect tense.
You make more sentences like this you will be knowing easily.