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how long did you know? vs for how long do you know

how long did you know? vs for how long do you know which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

how long did you know? is the most popular phrase on the web.

for how long do you know

1322,000 results on the web

how long did you know?

1366,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:

  • Your woman, how long do you know her?
  • Tell me, how long do you know the doll?
  • New lungs work, but for how long, you know?
  • How long do you know this already?
  • How long you know about this?
  • You know how long it took him.
  • Now you know how long demetri has left to live.
  • We've been friends for how long and you don't know I'm puerto rican?
  • It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

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how long did you know? vs for how long do you know | GrammarChecker.io