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Guilherme Mazui

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What is the Difference Between Should and Could?

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The main difference between "should" and "could" lies in their usage and meaning:

  • Should:
  • Used to express something that is probable or expected to happen.
  • Used to make suggestions, give advice, or express a polite but not so strong order, obligation, or instruction.
  • In some cases, it is the past tense of "shall".
  • Could:
  • Used to indicate a possibility or a past ability.
  • Used to make polite requests or suggestions, with the receiver having the option to accept or reject the offer.
  • In some cases, it is the past tense of "can".

Examples:

  • "Should": "John should be here by 2:00 PM".
  • "Could": "Whose journal is this? It could be Nelly's journal".

In summary, "should" is used to express probabilities, make suggestions, or give advice, while "could" is used to indicate possibilities or past abilities and to make polite requests or suggestions.

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  • What is the Difference Between Should and Could?
  • Comparative Table: Should vs Could

    • Comparative Table: Should vs Could

    Here is a table highlighting the differences between "should" and "could":

    Aspect Should Could
    Meaning Indicates obligation, duty, or correctness, suggesting the right thing to do or the best course of action Indicates a possibility or a polite request, often used when expressing uncertainty or being polite
    Tense Past tense of "shall" Past tense of "can"
    Usage To express probable situations, giving advice, or criticizing a past action To suggest a possibility, express uncertainty, or make a polite request
    Examples "John should be here by 2:00 PM." "Whose journal is this? It could be Nelly's journal."
    "He should be bringing his documents." "Could you please move this box?"
    "Should you have erased the disk?" "I could, but I am really busy right now."

    In summary, "should" is used to express obligation, duty, or correctness, while "could" is used for suggesting possibilities or making polite requests.

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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.