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EnglishAges 16-18

Subjunctive mood & conditionals

Use the formal subjunctive mood in counterfactual conditionals and mandative clauses. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 16-18

Subjunctive mood & conditionals

Take your time. Show your thinking.

  1. 1. Choose the correct form: “It is important that a scientific hypothesis ____ testable and falsifiable” (be / are).

    Choose the correct form “I… · Subjunctive mood & conditi…
  2. 2. Choose the correct form: “It is essential that the specimen ____ kept at a constant temperature” (be / is).

    Choose the correct form “I… · Subjunctive mood & conditi…
  3. 3. In the sentence “Verify the data before you publish”, what grammatical mood is the verb “Verify”: Imperative, Subjunctive, or Interrogative?

    “Verify” · Subjunctive mood & conditi…
  4. 4. Choose the correct form: “If gravity ____ weaker on Earth, athletes could jump much higher” (were / is).

    Choose the correct form “I… · Subjunctive mood & conditi…
  5. 5. Choose the correct form: “The editor demanded that the fabricated quotation ____ removed immediately” (be / was).

    Choose the correct form “T… · Subjunctive mood & conditi…
  6. 6. Choose the correct mandative subjunctive form: “The safety committee recommended that every student ____ goggles in the lab” (wear / wears).

    Choose the correct mandati… · Subjunctive mood & conditi…
  7. 7. Choose the correct inverted conditional: “____ the sensor to fail, the backup alarm would sound immediately” (Were / Was).

    Choose the correct inverte… · Subjunctive mood & conditi…
  8. 8. Choose the correct form: “It is vital that the patient ____ hydrated during recovery” (stay / stays).

    Choose the correct form “I… · Subjunctive mood & conditi…
  9. 9. In the sentence “If the bridge were wider, buses could cross in both directions”, what mood is “were”: Subjunctive or Imperative?

    “were” · Subjunctive mood & conditi…
  10. 10. In the fixed expression “Suffice it to say, the experiment succeeded”, what mood is “Suffice”: Subjunctive or Interrogative?

    “Suffice” · Subjunctive mood & conditi…
  11. 11. Choose the correct past counterfactual: “If we ____ measured the mass before heating, we could have calculated the water lost” (had / would have).

    Choose the correct past co… · Subjunctive mood & conditi…
  12. 12. Choose the correct form: “Take shelter immediately lest the storm ____ you in the open channel” (catch / catches).

    Choose the correct form “T… · Subjunctive mood & conditi…
12 questions · Seed 47 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 16-18

Subjunctive mood & conditionals

Answers and reasoning. Review before teaching.

  1. 1. Choose the correct form: “It is important that a scientific hypothesis ____ testable and falsifiable” (be / are).

    be

    “It is important that…” takes the mandative subjunctive “be”.

  2. 2. Choose the correct form: “It is essential that the specimen ____ kept at a constant temperature” (be / is).

    be

    After “It is essential that…”, the mandative subjunctive requires the base form “be”.

  3. 3. In the sentence “Verify the data before you publish”, what grammatical mood is the verb “Verify”: Imperative, Subjunctive, or Interrogative?

    Imperative

    The imperative mood issues a direct command or instruction.

  4. 4. Choose the correct form: “If gravity ____ weaker on Earth, athletes could jump much higher” (were / is).

    were

    Because gravity on Earth is not weaker, this counterfactual condition uses “were”.

  5. 5. Choose the correct form: “The editor demanded that the fabricated quotation ____ removed immediately” (be / was).

    be

    “Demanded that” requires the mandative subjunctive “be”.

  6. 6. Choose the correct mandative subjunctive form: “The safety committee recommended that every student ____ goggles in the lab” (wear / wears).

    wear

    After verbs of recommendation or demand (“recommended that”), the mandative subjunctive uses the bare infinitive “wear”.

  7. 7. Choose the correct inverted conditional: “____ the sensor to fail, the backup alarm would sound immediately” (Were / Was).

    Were

    Inverted hypothetical conditionals use “Were + subject + to-infinitive” (“Were the sensor to fail…”).

  8. 8. Choose the correct form: “It is vital that the patient ____ hydrated during recovery” (stay / stays).

    stay

    “It is vital that…” triggers the mandative subjunctive “stay”.

  9. 9. In the sentence “If the bridge were wider, buses could cross in both directions”, what mood is “were”: Subjunctive or Imperative?

    Subjunctive

    “Were” expresses a hypothetical condition contrary to present fact (subjunctive mood).

  10. 10. In the fixed expression “Suffice it to say, the experiment succeeded”, what mood is “Suffice”: Subjunctive or Interrogative?

    Subjunctive

    “Suffice it to say” preserves a classic formulaic subjunctive.

  11. 11. Choose the correct past counterfactual: “If we ____ measured the mass before heating, we could have calculated the water lost” (had / would have).

    had

    In a third conditional, the “if” clause uses the past perfect (“had measured”), not “would have”.

  12. 12. Choose the correct form: “Take shelter immediately lest the storm ____ you in the open channel” (catch / catches).

    catch

    Conjunction “lest” traditionally takes the subjunctive base verb (“catch”).

12 questions · Seed 47 · Age guidance, not curriculum certification