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Free SSC English lesson

SSC English Modal Verbs

Read the meaning. Check the verb pattern.

Modal verbs can express ability, permission, possibility, obligation and other meanings. The same modal can have different uses in different contexts. Separate the meaning question from the form question before choosing an answer.

Foundation to intermediate12 original questions20–25 minutes suggested study time

Learn the methodGo to practice

Build the skill

What you will learn

  • Interpret common modal meanings without treating them as one-to-one definitions.
  • Distinguish prohibition from lack of necessity.
  • Build common modal, perfect-modal and passive-modal verb groups.

Read the situation

Find whether the speaker is asking permission, giving advice or expressing another meaning.

Identify the instruction

Some items ask what a sentence means; others ask for a specified grammatical form.

Check the verb group

Central modals commonly take a base verb directly; perfect and passive groups need additional auxiliaries.

Preserve strength

Do not turn possibility into certainty, or optional action into prohibition.

Understand before you answer

The rules and clues to remember

A modal does not have only one meaning

Can and could can concern ability or permission. May and might can concern possibility; may can also ask permission. Use the sentence and the stated context.

AbilityShe can repair the hinge.
PermissionMay I use this chair?
PossibilityThe road might reopen soon.

Remember: An isolated modal word is not enough to identify the message.

Prohibition differs from lack of necessity

Must not commonly prohibits an action. Need not can mean the action is unnecessary; it does not forbid the action.

ProhibitionYou must not remove the label.
Unnecessary actionYou need not print the draft; a digital copy is enough.

Remember: Do not treat need not as another spelling of must not.

Advice and deduction need context

Should can give advice or a recommendation. Must can express a strong conclusion based on evidence as well as an obligation.

AdviceYou should save a backup.
DeductionThe lights are off and the gate is locked; the office must be closed.

Remember: A strong inference is different from an instruction to someone.

Check the auxiliary pattern

A central modal takes a base verb without a third-person -s. A perfect modal can use have plus a past participle; a simple modal passive uses be plus a past participle.

Base formShe can operate the printer.
PerfectThey may have missed the turn.
PassiveThe form must be signed.

Remember: Do not put a past form after did or after a modal merely because the situation concerns the past.

Questions and related expressions

A central modal can move before the subject in a question without do-support. Ought to is a related expression with to before the base verb.

QuestionCould you move the chair?
Ought toYou ought to keep a copy.

Remember: Can, could and may can all occur in permission contexts; these questions specify the pattern when that choice would otherwise be ambiguous.

See the reasoning

Two worked examples

Example 1

A digital copy is enough, but paper copies are allowed. Choose the meaning: “You need not print this.” Options: printing is unnecessary / printing is forbidden / printing is compulsory / printing is impossible.

AnswerPrinting is unnecessary.

Need not removes the requirement while allowing the choice. Forbidden would require a prohibition; compulsory would reverse the meaning; impossible would concern ability or feasibility, not whether printing is required.

Example 2

The speaker draws a conclusion from evidence: “The gate is locked and the building is dark. It must be closed.” What does must express? Options: a strong inference / permission to close / a past ability / an offer to help.

AnswerA strong inference.

The speaker infers closure from the evidence. The sentence does not grant permission, describe an ability or make an offer. Must can express obligation elsewhere, but that is not the stated use here.

Try it yourself

12 questions, with every choice explained

Some questions ask for meaning; others specify a modal or verb pattern. Follow that instruction. Do not assume that a different modal is always ungrammatical merely because it expresses a different message.

Write down A, B, C or D before opening each answer. Work at your own pace. These exercises use no exam timer or negative marking.

Question 1 · Permission

In “May I join the group?”, the speaker is ___.

  1. A.forbidding the group to meet
  2. B.describing a past ability
  3. C.asking permission
  4. D.stating a certainty
Show answer and explanations for question 1

Answer C: asking permission

  1. Not correct. It requests entry rather than prohibits a meeting.
  2. Not correct. The sentence is not about an ability in the past.
  3. Correct. May I …? asks for permission to join in this sentence.
  4. Not correct. It is a question seeking permission, not a statement of certainty.
Review the method ↑Next question ↓

Question 2 · General past ability

“At five, Noor could already swim.” Here could describes ___.

  1. A.a general ability in the past
  2. B.a present obligation
  3. C.an unnecessary action
  4. D.a certain future event
Show answer and explanations for question 2

Answer A: a general ability in the past

  1. Correct. Could describes Noor’s swimming ability at the stated past age.
  2. Not correct. There is no requirement imposed on Noor in this sentence.
  3. Not correct. The sentence states ability rather than whether an action was necessary.
  4. Not correct. At five gives a past reference, not a certain future event.
Review the method ↑Next question ↓

Question 3 · Prohibition

A rule says, “You must not enter this room.” This means ___.

  1. A.entry is optional but allowed
  2. B.entry is forbidden
  3. C.entry is compulsory
  4. D.entry happened in the past
Show answer and explanations for question 3

Answer B: entry is forbidden

  1. Not correct. Optional entry is not the meaning of the prohibition.
  2. Correct. Must not expresses prohibition in this rule.
  3. Not correct. Compulsory entry reverses the rule.
  4. Not correct. The rule does not state that an entry occurred in the past.
Review the method ↑Next question ↓

Question 4 · Lack of necessity

“You need not print the draft; a digital copy is enough.” This means ___.

  1. A.printing is physically impossible
  2. B.printing is forbidden
  3. C.printing is required
  4. D.printing is not necessary
Show answer and explanations for question 4

Answer D: printing is not necessary

  1. Not correct. It says nothing about physical ability to print.
  2. Not correct. It does not prohibit a paper copy.
  3. Not correct. It removes rather than imposes the printing requirement.
  4. Correct. Need not means printing is unnecessary in the stated context.
Review the method ↑Next question ↓

Question 5 · Possibility

“The delivery might arrive late.” What does the sentence communicate?

  1. A.Late arrival is possible, not certain.
  2. B.Late arrival is guaranteed.
  3. C.Late arrival is impossible.
  4. D.The delivery has definitely already arrived late.
Show answer and explanations for question 5

Answer A: Late arrival is possible, not certain.

  1. Correct. Might expresses the possibility of late arrival without a guarantee.
  2. Not correct. Guaranteed lateness is stronger than the statement allows.
  3. Not correct. Impossible lateness contradicts the possibility expressed.
  4. Not correct. The sentence does not report a definitely completed arrival.
Review the method ↑Next question ↓

Question 6 · Advice

In the advice “You should keep a backup”, should expresses ___.

  1. A.a claim that keeping a backup is impossible
  2. B.a statement that the action has already happened
  3. C.a recommendation
  4. D.a request for permission from the listener
Show answer and explanations for question 6

Answer C: a recommendation

  1. Not correct. The advice treats keeping a backup as possible, not impossible.
  2. Not correct. It does not assert that a backup has already been kept.
  3. Correct. Should gives a recommendation in the explicitly stated advice context.
  4. Not correct. The speaker is advising, not asking the listener for permission.
Review the method ↑Next question ↓

Question 7 · Base form after can

She can ___ the device without help.

  1. A.operating
  2. B.operates
  3. C.operated
  4. D.operate
Show answer and explanations for question 7

Answer D: operate

Completed textShe can operate the device without help.
  1. Not correct. Operating cannot follow can directly in this construction.
  2. Not correct. Operates adds a third-person -s that does not follow can directly.
  3. Not correct. Operated is not the base form needed directly after can.
  4. Correct. Can is followed directly by the base form operate here.
Review the method ↑Next question ↓

Question 8 · Negative modal form

Use must to express prohibition: We ___ leave yet.

  1. A.do not must
  2. B.must not
  3. C.must to not
  4. D.must not to
Show answer and explanations for question 8

Answer B: must not

Completed textWe must not leave yet.
  1. Not correct. A central modal does not use do-support to form this negative.
  2. Correct. Must not forms the negative modal before base verb leave.
  3. Not correct. Must does not take to before its following base verb in this pattern.
  4. Not correct. To does not belong between must not and leave here.
Review the method ↑Next question ↓

Question 9 · Request question

Use could for a polite request: ___ you ___ the lid, please?

  1. A.Could … opens
  2. B.Do could … open
  3. C.Could … open
  4. D.Are … could open
Show answer and explanations for question 9

Answer C: Could … open

Completed textCould you open the lid, please?
  1. Not correct. Opens wrongly adds -s after could.
  2. Not correct. Do-support is not used with could in this question.
  3. Correct. Could moves before the subject and takes base form open.
  4. Not correct. Are does not form the question with could in this structure.
Review the method ↑Next question ↓

Question 10 · Perfect modal form

Express the possibility of a completed past action: He may ___ the wrong train.

  1. A.has taken
  2. B.have taken
  3. C.have took
  4. D.having taken
Show answer and explanations for question 10

Answer B: have taken

Completed textHe may have taken the wrong train.
  1. Not correct. Has cannot directly follow may in this construction.
  2. Correct. May have taken uses base have plus past participle taken for the possible past action.
  3. Not correct. Took is simple past; the perfect group needs past participle taken.
  4. Not correct. Having cannot replace base have directly after may here.
Review the method ↑Next question ↓

Question 11 · Modal passive

Choose the simple modal passive: Visitors must ___ at the gate.

  1. A.be checked
  2. B.been checked
  3. C.be check
  4. D.being checked
Show answer and explanations for question 11

Answer A: be checked

Completed textVisitors must be checked at the gate.
  1. Correct. Must be checked uses base be plus past participle checked.
  2. Not correct. Been cannot follow must directly in this simple passive.
  3. Not correct. Check is a base verb; the passive needs participle checked after be.
  4. Not correct. Being cannot replace base be directly after must here.
Review the method ↑Next question ↓

Question 12 · Ought to

You ought ___ the receipt.

  1. A.keeping
  2. B.keep
  3. C.to kept
  4. D.to keep
Show answer and explanations for question 12

Answer D: to keep

Completed textYou ought to keep the receipt.
  1. Not correct. Keeping does not form the ought to construction.
  2. Not correct. Ought normally needs to in this standard written affirmative pattern.
  3. Not correct. To must be followed by base keep here, not kept.
  4. Correct. Ought to keep uses to followed by base form keep.
Review the method ↑Review your learning ↓

Make the learning stick

Review what changed your answer

  1. Separate answers about meaning from answers about grammatical form.
  2. Write contrasting examples with must not and need not.
  3. Label the auxiliaries and main-verb forms in may have taken and must be checked.

Keep a simple note: question number → your reason → the correct rule or evidence → one new example. A mistake is useful when you can explain the correction.

SSC English hub →SSC English Nouns and Number →SSC English Adjectives and Adverbs →Active and passive voice →

Original ESS learning material. Not official SSC questions or a previous-year paper. ESS is independent of SSC. These are untimed skill lessons, not full exam simulations.

References and exam scope

Scope: CGL 2026 Tier-II, Paper-I, Section-II; CHSL 2026 Tier-I and Tier-II English. These are topic lessons, not complete mocks. These topics are included in the linked SSC examination notices. The lesson wording, examples, passages and questions are original ESS teaching material. Check your exam’s current notice and subsequent corrections for its full syllabus, scoring and timing.

Sources reviewed: 3 November 2026. Study-time estimates are suggestions, not official exam limits.