Both WHETHER and IF are used to introduce a yes/no question.                        Sometimes they can be used interchangeably, but sometimes they are not interchangeable. Have a look at the grammar sheet  below to learn more about how to use them. 

                          You can download this grammar sheet in PDF format                       by clicking on the PDF icon below.

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whether vs if - grammar
whether vs if  exercises

This ebook has been written to help students prepare for the Key Word Transformation part of the Use of English paper (grammar) of the Cambridge English:  C1 Advanced exam.

It will give you a good understanding of the different grammatical structures commonly used in this part of the Use of English test, e.g. passive - active voice , impersonal passive, conditional sentences , inverted conditionals, inversions, set phrases, comparative-superlative, causative verbs, phrasal verbs, linking words, etc.

If you want to learn how to do Key word transformation exercises effectively, this book is for you.

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