What's been completed? ('have been completed' vs 'is completed')

[Wendy]

Please read the two following sentences and tell me what's the difference in their meanings in terms of the tense that was used.

Sentence A

I will let you know when the tasks HAVE BEEN COMPLETED.

Senetence B

I will let you know when the task IS COMPLETED.

Thanks,
Wendy

[Mister Micawber]

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Sentence A speaks of multiple tasks, while sentence B speaks of just one. Otherwise, there is no real difference in meaning, though A indicates the end of the action ('have been completed' is a verb) while B indicates the condition ('completed' is an adjective).
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Native English teacher at Mister Micawber's

[Wendy]

Thanks Mr. Micawber. A quick question: I'm looking for a on-line writing teacher who will look over and correct my atrocious grammar, syntax and everything that would help me to become a better writer. Can you recommend some website(s) where I can get a teacher.

Thanks,
Wendy

[Mister Micawber]

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Sorry, I don't know any offhand. Maybe another member does. You can always google a phrase ('writing teacher', 'English writing help', etc.
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Native English teacher at Mister Micawber's

[Torsten]

Hi Wendy,

You might want to check in our Writing Training offer.

Regards,
Torsten

TOEFL listening discussions: A conversation between two university students (1)

[Mister Micawber]

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Good idea, Torsten!
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Native English teacher at Mister Micawber's