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must have done something vs might have done something

Both phrases are correct, but they convey different levels of certainty. 'Must have done something' indicates a high level of certainty that an action was completed in the past, while 'might have done something' suggests a possibility or likelihood of an action occurring. The choice between the two depends on the degree of certainty you want to express.

Last updated: March 17, 2024 • 1885 views

must have done something

This phrase is correct and commonly used in English to express a high level of certainty about a past action.

This phrase is used to indicate a strong belief or certainty that an action was completed in the past. It implies that the action almost certainly happened.

Examples:

  • He must have taken the wrong turn because he's late.
  • She must have forgotten her keys at home.
  • "Must Have Done Something Right". [Verse 1] We should get jerseys cause we make a good team. But yours would look better than mine, cause you're outta my  ...
  • Jul 27, 2009 ... Relient K - Must Have Done Something Right ( With Lyrics) ..... Must have done something wrong since you left me and didn't tell me why :,(.
  • Nov 6, 2014 ... Must Have Done Something Right. Gotee Records. SubscribeSubscribed Unsubscribe 5,7055K. Loading... Loading... Working... Add to ...
  • "Must Have Done Something Right" is the lead single from Relient K's fifth album, Five Score and Seven Years Ago. The song was officially released to radio in ...

Alternatives:

  • definitely did something
  • certainly did something
  • undoubtedly did something
  • surely did something
  • absolutely did something

might have done something

This phrase is correct and commonly used in English to express a possibility or likelihood of a past action.

This phrase is used to suggest a possibility or likelihood that an action occurred in the past. It indicates less certainty compared to 'must have done something.'

Examples:

  • She might have left her umbrella in the car.
  • He might have misunderstood the instructions.
  • This is the British English definition of might have done something. View American English definition of might have done something. Change your default  ...
  • as you might expect/imagine · I might have known/guessed · I might say/add · might...but · might have done something · might (just) as well · might not/might ...
  • Apr 2, 2012 ... Had she known starting a network is so difficult, she admitted, “I might have done something else.” The segment began with the usual small talk ...
  • Aug 14, 2015 ... 'I think I might have done something really bad,' says Cleo - after paedophile Pete assaults her. 12:01am, Saturday, 15 August 2015 ...

Alternatives:

  • could have done something
  • may have done something
  • possibly did something
  • likely did something
  • probably did something

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