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"this is why" vs "that is why"

Both 'that is why' and 'this is why' are correct phrases in English. The choice between them depends on the context and the proximity of the explanation to the current point in the conversation.

Last Updated: March 15, 2024

this is why

This phrase is correct and commonly used in English to provide an explanation or reason for something that is about to be mentioned or is currently being discussed.

Use 'this is why' when introducing a reason or explanation for something that is about to be mentioned or is the current topic of discussion.

Examples:

  • She is always planning her next trip; this is why she loves to travel.
  • This is why I think we should invest in new technology.

Alternatives:

  • that is why
  • therefore
  • hence
  • as a result
  • for this reason

that is why

This phrase is correct and commonly used in English to provide an explanation or reason for something that has been previously mentioned.

Use 'that is why' when referring to a reason or explanation that has been mentioned earlier in the conversation or text.

Examples:

  • He didn't study for the test, and that is why he failed.
  • She loves to travel, and that is why she is always planning her next trip.

Alternatives:

  • this is why
  • therefore
  • hence
  • as a result
  • for this reason

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