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Anonymous Posted 14 years ago
Grammar

Present perfect continuous

A texting style convention is developing.
A texting style convention has been developing.

I'm changing.
I've been changing.

What are the differences between these sentences? Can I use them all to express the same idea? Thanks.
  

Top answer

No, they don't express the same idea. The present perfect continuous extends back into the past.

  • No, they don't express the same idea.
  • The present perfect continuous extends back into the past.
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4 Answers
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No, they don't express the same idea. The present perfect continuous extends back into the past.
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Let's take the second sentences as an example. Do they both mean that I'm still changing?
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AnonymousLet's take the second sentences as an example. Do they both mean that I'm still changing?
Yes, they both can mean that you are still changing, but they differ in how long or since when.
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Is the first one better when I don't want to say for how long or since when? And, is it better in such cases? Is present perfect continuous common in cases like this "changing"?

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