Modals

Modal verbs are a special class of verbs because they can only be used as auxiliary verbs. The purpose of modal verbs is to add a sense of intention, opinion, possibility, to an action. Here is a list of all Modal verbs, their uses and example sentences.

All Modals follow the same structure:

Positive: Subject + Modal + Verb
Negative: Subject + Modal + Not + Verb
Question: Modal + Subject + Verb ?

Will / Won’t

  • Future action
    Sarah will lead the client presentation next week.
  • 1st Conditional (possible consequence)
    If we miss the deadline, the client won’t renew the contract.
  • + Perfect (Future Perfect)
    By the end of the year, we will have expanded operations overseas.

Would / Wouldn’t

  • 2nd Conditional (hypothetical consequence)
    If I had more experience, I would apply for the management role.
  • Past Routines
    During busy seasons, the team would stay late to finish reports.
  • Polite Requests
    Would you mind reviewing this report before lunch?
  • + Perfect (3rd Conditional)
    If we had allocated more resources, the project would have finished on time.

Can / Can’t

  • Possibility / Ability
    Mark can troubleshoot most technical issues on his own.
  • 1st Conditional:
    If we complete the design phase today, we can begin development tomorrow.
  • Polite Requests
    Can you help me finalize this spreadsheet?

Could / Couldn’t

  • Past Possibility / Ability
    We could have launched earlier if the marketing materials were ready.
  • 2nd Conditional
    If I were in charge, I could improve team productivity by restructuring tasks.
  • Polite Requests
    Could you explain this report to the new intern?
  • + Perfect (3rd Conditional)
    The project could have succeeded if the initial research had been more thorough.

Shall / Shall not

  • Declarations
    We shall implement the new training program by next quarter.
  • Legal Documents
    Employees shall not disclose confidential information to third parties.

Should / Shouldn’t

  • Suggestion
    We should consider automating the data entry process.
  • Advice
    You shouldn’t delay submitting the quarterly budget report.
  • Supposition
    The client should arrive by 3 PM for the meeting.
  • + Perfect = Past Action Critique/Evaluation
    We should have clarified the project scope earlier.

Must / Must not

  • Obligation
    All employees must complete the cybersecurity training by Friday.
  • Deduction
    The office lights are on, so someone must still be working.
  • + Perfect = Past Action Deduction
    She must have sent the email this morning because the client replied.

Might / Might not & May / May not

  • Possibility
    The team might finish the project ahead of schedule.
  • Guessing
    John may be working remotely today.
  • Polite Request
    Might I schedule a meeting with you this afternoon?
  • + Perfect = Possibility/Guessing of Past Action
    They might have overlooked the error during the audit.

Additional Modal constructs

Might as well / May as well

  • Suggestion (when no better option is available):
    We might as well finish the report today since the meeting was postponed.

Need to / Need not (Needn’t)

  • Necessity
    You need to submit the project plan by Friday.
  • Lack of Necessity
    You need not attend the meeting if you already sent your updates.

Ought to / Ought not to

  • Advice / Moral Obligation
    We ought to double-check the figures before presenting them.
  • + Perfect = Criticism of Past Action
    You ought to have informed the manager about the delay sooner.

Had better / Had better not

  • Strong Advice / Warning
    You had better finalize the budget before the end of the quarter.
  • Negative Warning
    We had better not share this data until it’s verified.

Dare / Dare not (Daren’t)

  • Inability / Fear to Act
    She dare not miss the client meeting.
  • Courage / Challenge (Formal)
    He dare not question the CEO’s decision without solid evidence.