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  1. If or whether ? - Grammar - Cambridge Dictionary

    After the election, we asked whether the parties should change their leaders, their policies, or both. To express an alternative, we can use or not with if and whether.

  2. How to check if Windows 11 is installed on your PC

    Jul 4, 2025 · In this guide, I’ll walk you through the steps to verify if Windows 11 is already installed on your computer. To check whether Windows 11 is installed on your device, use …

  3. is there a difference between "check if" and "check whether"

    Nov 13, 2002 · 'Whether' tends to emphasise the existence of two choices- check whether they're coming or not.

  4. If vs. Whether: What's the Difference? - Grammarly

    When should you use if vs. whether? Examine their meanings and learn when to use if or whether in a sentence.

  5. If or Whether? We’ll Tell You When to Use Which Word and Why

    Jun 17, 2025 · Although using whether or if interchangeably is common, it’s best to know their distinctions, especially in formal settings. Use if for conditional sentences and whether when …

  6. If or Whether? - Grammar Monster

    If and whether are often interchangeable but not always. Use 'if' to introduce a condition. In all other circumstances, use 'whether.'

  7. The Difference between 'If' and 'Whether' | Merriam-Webster

    If and whether are often interchangeable, but have distinct uses. For clarity, it is best to use whether in reference to a choice or alternatives ("we're going whether it rains or not") and if …

  8. to check whether or to check whether or not - TextRanch

    Oct 30, 2024 · Learn the correct usage of "to check whether " and "to check whether or not " in English. Discover differences, examples, alternatives and tips for choosing the right phrase.

  9. Email Checker - Verify Email Address Online

    Email Checker is a free little tool that helps you find out whether an email address is valid or not, within a second!

  10. Grammar: How to use IF & WHETHER properly - engVid

    Learn how to use if and whether properly in English. Whether you like it or not, if and whether are not always interchangeable. In fact, if you use the wrong word, it can change the entire …