Modal Verbs: Will, Would & Should

In this lesson you’ll refine how will/would/should express deduction, habit, politeness, and judgement—not just time. Focus on the speaker’s attitude and the implied context.

1. Assumptions and logical conclusions

Used for confident inference about what is probably true in the present or (sometimes) the future, based on evidence or what you know about the situation.

Examples:

• That’ll be John at the door.
• Don’t call her now — she’ll be sleeping.
• You’ll probably recognize him immediately.

Here, will is an epistemic inference (a knowledge-based guess/assumption), rather than volition/decision or future-time reference.

Confident negative inference with “won’t”

Won’t can be the negative counterpart of epistemic will. It expresses the speaker’s confident conclusion that something is not true, will not happen, or will not be sufficient.

• “That won’t be enough food for twelve people.”
• “The caller won’t be Maya; she’s abroad this week.”
• “They won’t have arrived at the hotel yet. Their flight landed only five minutes ago.”

Here, won’t expresses a confident negative assessment, not unwillingness or refusal.

2. Habitual or typical behaviour

Used to describe someone’s characteristic behaviour (often in the present), usually with an attitude such as annoyance, affection, or criticism.

Examples:

• He’ll sit in front of the TV for hours.
• She’ll always complain about something.
• My father will insist on paying for dinner.

This often suggests:

• annoyance
• affection
• criticism
• a ‘knowing’ tone about someone’s typical behaviour

3. Willingness and refusal

Examples:

• The car won’t start.
• He wouldn’t answer my questions.
• She will help anyone in need.

With people, won’t/wouldn’t often implies refusal rather than inability. With things (machines/systems), it often means ‘doesn’t work / fails to’. By contrast, the epistemic use in section 1 expresses a confident negative conclusion rather than refusal.

4. Advanced uses of would

4.1 Past habits

Used for repeated past actions.

Examples:

• Every summer, we would visit my grandparents.
• He would spend hours reading science fiction novels.

Unlike “used to,” “would” is mainly used for repeated actions, not states.

Correct:

• We would play outside every evening.

Also, ‘would’ for past habits typically works after a past time frame has been established (e.g., ‘When we were kids,…’ ‘Back then,…’). Once the time frame is clear, you can continue using ‘would’ without repeating it in every sentence.

4.2 Politeness and softening

Used to sound less direct.

Examples:

• I would suggest waiting a little longer.
• Would you mind helping me?
• I would imagine that’s quite difficult.

This creates:

• diplomacy
• professional tone
• emotional distance

4.3 Hypothetical attitude

Examples:

• I would never do something like that (in your position).
• She would probably disagree (if you asked her).

Used to express a tentative/imagined stance rather than a firm statement.

4.4 Preferences and hypothetical past

Use would rather or would sooner for preferences: I’d rather stay home. / I’d sooner wait until tomorrow. Use would have + past participle for a hypothetical past result: I would have helped if I had known.

5. Advanced uses of should

5.1 Expectation and probability

Examples:

• The train should arrive soon.
• It should be easy to find.
• They should have enough time.

“Should” here means:

probably / expected to

5.2 Emotional criticism or surprise

Examples:

• You really shouldn’t speak to people like that.
• Why should I apologise when I did nothing wrong?
• It’s strange that she should react that way.

At advanced levels, “should” can express:

• irritation
• surprise
• emotional judgement

This is a formal pattern often used after adjectives like strange/odd/surprising/natural (attitudinal should), not advice.

In British English, should can also follow suggest, insist, demand, and recommend: I insisted that he should apply. American English often uses the bare subjunctive instead: I insisted that he apply.

5.3 Inverted conditionals with should

In formal writing, omit if and put should first: Should you need any assistance, please contact reception.

5.4 “Shall” for suggestions, offers and formal obligation

Shall is a separate modal, but it overlaps with should in some questions. With I/we, shall is used for offers and suggestions, especially in British English or more formal speech.

• “Shall I open the window?” (offer)
• “Shall we begin?” (suggestion or request for agreement)

Compare “Shall we leave?” (a proposal) with “Should we leave?” (a question about whether leaving is advisable). In North American English, should we …?, let’s …, or do you want me to …? is often more natural than shall in conversation.

In legal or highly formal writing, shall can state an obligation: “The tenant shall pay the rent on the first day of each month.” This authoritative use is different from ordinary advice with should.

6. Tone and pragmatic meaning

These tones are common interpretations and depend on context, stress/intonation, and relationship between speakers.

Modals often change the emotional tone of a sentence.

Compare: He’ll sit in front of the TV for hours and never help with dinner. (annoyed) versus He’ll sit in front of the TV for hours, happy with an old film. (fond/knowing). The attitude changes with context and intonation.

Modal	Common functions	Possible tones in context
will / won’t	confident inference, willingness/refusal, typical behaviour	certainty, reassurance, insistence, annoyance, affection
would / wouldn’t	politeness, hypothetical distance, past habit, refusal	deference, tentativeness, emotional distance, nostalgia, criticism
should / shouldn’t	expectation, advice, evaluation	reassurance, concern, criticism, surprise, formal detachment
shall	offer, proposal, formal obligation	collaborative, formal, authoritative or legalistic

7. Summary

• will: (1) confident positive or negative inference (That’ll be John / That won’t be enough), (2) typical behaviour with attitude (He’ll sit…), (3) willingness, refusal, or malfunction.
• would: (1) past repeated actions after a past time frame (When we were kids, we would…), (2) softening/politeness (I would suggest…), (3) hypothetical/imagined stance (I would never…).
• should: (1) expectation/probability (should arrive soon), (2) evaluative/emotional judgement in formal frames (It’s strange that… should…).
• shall: offers or proposals with I/we, especially in British or formal English; formal texts may use it for obligation.
• Meaning depends on context, relationship, and tone/intonation; avoid reading these only as tense.