Whether vs. If

Whether and If

We can generally use both whether and if to introduce indirect yes/no questions.

  • I am not sure whether/if she will come.
  • I asked whether/if she had any letters for me.
  • I don’t know whether/if I can come or not.

Cases where only whether is possible

After prepositions only whether is possible.

  • There was a big argument about whether we should move to a new house. (NOT There was a big argument about if …)
  • I haven’t settled the question of whether I should settle abroad.

Before to-infinitives, only whether is possible.

  • They can decide whether to get married now or wait.
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Manjusha Nambiar

Hi, I am Manjusha. This is my blog where I give English grammar lessons and worksheets.

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