Perfect tense in context: Where is our new device? etc...

[Palych]

What variants are correct?

- Do you know that John has received a new letter from Becky?
- No yet.
- She wrote (has written) that she wants to visit us next week.

- Where is our new device?
- Oh, it has broken. John (has?) burned it.
- O, no! We (have) paid incredible money for it! And it (has) had such a suitable interface...

- I have ceased the use of this software.
- But why did you do it?
- The use of it (has) brought me a lot of broblems.
or
- But why have you done it?
- The use of it (has) brought me a lot of broblems.

Thanks.

[Mister Micawber]

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These are correct:

- Do you know that John's received a new letter from Becky?
- No.
- She wrote / She's written that she wants to visit us next week.

- Where's our new device?
- Oh, it's broken. John burned / has burned it.
- Oh no! We paid a lot of money for that! And it had such a suitable interface!

- I've stopped / I stopped using this software.
- Why?
- It had a lot of problems.
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Native English teacher at Mister Micawber's

[Palych]

[Mister Micawber]

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The choice is primarily the speaker's individual mindset. Present perfect makes the action more immediate, in some way, to NOW.
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_________________
Native English teacher at Mister Micawber's

[Palych]

[Mister Micawber]

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My statement was perfectly fair. There are theses written about all the nuances of the uses of present perfect, but I am certainly not going to try to elaborate them all here. Mine is a simple overview.

John has written a capturing novel. He published it about 20 years ago. -- In the first place, this seems poorly written-- I think the writer means 'captivating novel'. In the second place, it works precisely to my guideline- it brings John's old novel up to present consideration of his ability.
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Native English teacher at Mister Micawber's

[Palych]

Are the tenses used correct here?

- Why do you not use the application created by John?
- I do not like it. It conflicts with some other applications.
- Do not worry. He made some corrections and now the software works well.
- Well, I will try it. But what about him? Does he still work in "Jolly Hacker"?
- No. He has worked there only for some months. He found some unexpected solutions and wrote two rather interesting codes. After he leaved the company he joined to "Still Spies". But now he is in a police station because yesterday he beat his chief. It is interesting to note that when he was sitting down into a police car he looked happy and his words before the door was shut were "I did it!" - probably his hate for his chief has been cherishd for a long time.

Thanks.

[Mister Micawber]

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The verb tenses are mostly OK, but it is not very natural.

- Why don't you use the application John created?
- I don't like it. It's not compatible with some other applications.
- Don't worry. He's made some corrections, and now it works fine.
- Well, I'll try it. By the way, does John still work at the "Jolly Hacker"?
- No. He worked there only for a few months. He found some unexpected solutions and wrote two rather interesting codes. After he left the company, he joined "Still Spies". But now he's in jail, because yesterday he hit his boss. And when he was sitting in the police car, he looked happy, and he said before the door was shut, "I did it!" He has probably hated his boss for a long time.
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Native English teacher at Mister Micawber's

[Palych]

Thank you very much for detailed corrections. And three examples, probably, the last ones in this thread, more:

... John has made some corrections. He rewrote input/output and changed the part of the code relating to interruptions. Also, he has improved the interface...

... Unluckily, he has come too late. Somebody has picked the tire of a wheel of his car and John has spent a half of an hour changing it.

They have manufactured power supplies using this technology for the last two years.

[Mister Micawber]

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... John has made some corrections. He rewrote the input/output and changed the part of the code relating to interruptions. He has also improved the interface...

... Unluckily, he came too late. Somebody punctured his car tire and John spent half an hour changing it.

They have manufactured power supplies using this technology for the last two years.
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_________________
Native English teacher at Mister Micawber's

[Palych]

One moment is not enough fair yet.

"... - Let John do it.
- He has gone. Mary has told him that somebody has broken the windshield of his car and he went out."

Thank you in advance.

[Mister Micawber]

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Hello, Hoda and Palych. What are your questions?
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Native English teacher at Mister Micawber's

[Hoda]

Hi I am fourty one . I love to learn English and I can speak English with other people in the world but I can't , I don't have improve very fast and I am tierding . Can you help me ?

[Mister Micawber]

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Thank you for joining us, Hoda. In future, please do not post unrelated comments to a thread. You may post your greetings in our New ESL Member? forum.
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Native English teacher at Mister Micawber's

[Palych]

I do not mind the appearance of other people in my thread, but I saw with amazement "Hello, Hoda and Palych. What are your questions?" because, first, we are not a team, second, I have already put my new question above. Here is it:

"... - Let John do it.
- He has gone. Mary has told him that somebody has broken the windshield of his car and he went out."

Thank you.