1. Introduction to Grammatical Mood

• 1.1. Definition of Grammatical Mood

• 1.2. Mood vs. Tense

• 1.3. Mood vs. Aspect

• 1.4. Mood vs. Modality

• 1.5. Mood vs. Voice

• 1.6. Finite and Non-Finite Verb Forms

• 1.7. Realis and Irrealis Mood

• 1.8. Grammatical Mood in Modern English

• 1.9. Morphological and Periphrastic Expression of Mood

• 1.10. Relationship Between Mood and Sentence Meaning

2. Types of Grammatical Mood

• 2.1. Indicative Mood

• 2.2. Imperative Mood

• 2.3. Subjunctive Mood

• 2.4. Conditional Mood (Traditional Classification)

• 2.5. Interrogative Mood (Functional Classification)

• 2.6. Optative Mood

• 2.7. Jussive Mood

• 2.8. Hortative Constructions

• 2.9. Potential Mood

• 2.10. Dubitative Mood

• 2.11. Realis vs. Irrealis Constructions

• 2.12. Mood Categories Across Languages

3. Indicative Mood

• 3.1. Definition and Functions

• 3.2. Statements of Fact

• 3.3. Descriptions of Reality

• 3.4. Affirmative Indicative Sentences

• 3.5. Negative Indicative Sentences

• 3.6. Indicative Mood in Questions

• 3.7. Present Indicative

• 3.8. Past Indicative

• 3.9. Future-Time Reference in Indicative Clauses

• 3.10. Indicative Mood in Declarative Sentences

• 3.11. Indicative Mood in Conditional Clauses

• 3.12. Indicative vs. Subjunctive Mood

4. Imperative Mood

• 4.1. Definition of Imperative Mood

• 4.2. Direct Commands

• 4.3. Instructions and Directions

• 4.4. Requests and Appeals

• 4.5. Suggestions and Advice

• 4.6. Positive Imperatives

• 4.7. Negative Imperatives

• 4.8. Emphatic Imperatives with Do

• 4.9. Imperatives with Let

• 4.10. Inclusive Imperatives with Let's

• 4.11. Imperatives with Explicit Subjects

• 4.12. Imperative Mood and Politeness

• 4.13. Imperatives in Conditional-Like Constructions

5. Subjunctive Mood: Fundamentals

• 5.1. Definition of Subjunctive Mood

• 5.2. Historical Development of the English Subjunctive

• 5.3. Present Subjunctive

• 5.4. Past Subjunctive

• 5.5. Mandative Subjunctive

• 5.6. Formulaic Subjunctive

• 5.7. Subjunctive with Be

• 5.8. Subjunctive with Other Verbs

• 5.9. Subjunctive in Formal English

• 5.10. Subjunctive in Informal English

• 5.11. Subjunctive in British and American English

• 5.12. Subjunctive vs. Indicative

• 5.13. Subjunctive vs. Modal Constructions

6. Present Subjunctive

• 6.1. Base Form of the Verb

• 6.2. Absence of Third-Person Singular -s

• 6.3. Present Subjunctive with Be

• 6.4. Present Subjunctive in That-Clauses

• 6.5. Present Subjunctive After Suggestions

• 6.6. Present Subjunctive After Recommendations

• 6.7. Present Subjunctive After Demands

• 6.8. Present Subjunctive After Requests

• 6.9. Present Subjunctive After Orders

• 6.10. Present Subjunctive After Expressions of Necessity

• 6.11. Negation in Present Subjunctive Clauses

• 6.12. Passive Present Subjunctive

• 6.13. Present Subjunctive vs. Should + Infinitive

7. Past Subjunctive and Irrealis Were

• 7.1. Definition of Past Subjunctive

• 7.2. Use of Were with All Persons

• 7.3. If I Were vs. If I Was

• 7.4. Hypothetical Present Situations

• 7.5. Unreal and Counterfactual Conditions

• 7.6. Past Subjunctive in Wish-Constructions

• 7.7. Past Subjunctive After If Only

• 7.8. Past Subjunctive After As If

• 7.9. Past Subjunctive After As Though

• 7.10. Past Subjunctive in Formal English

• 7.11. Past-Tense Forms Used for Hypothetical Meaning

• 7.12. Subjunctive Were vs. Ordinary Past Was

8. Mandative Subjunctive

• 8.1. Definition and Structure

• 8.2. Verbs Expressing Demands

• 8.3. Verbs Expressing Recommendations

• 8.4. Verbs Expressing Suggestions

• 8.5. Verbs Expressing Requests

• 8.6. Verbs Expressing Necessity

• 8.7. Mandative Subjunctive After Insist

• 8.8. Mandative Subjunctive After Suggest

• 8.9. Mandative Subjunctive After Recommend

• 8.10. Mandative Subjunctive After Demand

• 8.11. Mandative Subjunctive After Adjectives

• 8.12. Mandative Subjunctive After Nouns

• 8.13. Negative Mandative Subjunctive

• 8.14. Passive Mandative Subjunctive

• 8.15. Mandative Subjunctive vs. Indicative That-Clauses

9. Formulaic and Optative Subjunctive

• 9.1. Fixed Subjunctive Expressions

• 9.2. God Save the King

• 9.3. Long Live the King

• 9.4. Heaven Forbid

• 9.5. So Be It

• 9.6. Be That as It May

• 9.7. Suffice It to Say

• 9.8. Expressions of Blessing

• 9.9. Expressions of Hope

• 9.10. Expressions of Goodwill

• 9.11. Expressions of Prayer

• 9.12. Literary and Archaic Optative Forms

10. Introduction to Hypothetical Constructions

• 10.1. Definition of Hypothetical Meaning

• 10.2. Real vs. Hypothetical Situations

• 10.3. Possible vs. Impossible Situations

• 10.4. Factual vs. Counterfactual Statements

• 10.5. Present Hypothetical Situations

• 10.6. Past Hypothetical Situations

• 10.7. Future Hypothetical Situations

• 10.8. Degrees of Hypotheticality

• 10.9. Hypothetical Meaning Through Past-Tense Forms

• 10.10. Hypothetical Meaning Through Modal Verbs

• 10.11. Hypothetical Meaning Through Subordinate Clauses

• 10.12. Hypotheticality and Speaker Attitude

11. Conditional Constructions: Fundamentals

• 11.1. Definition of Conditional Sentences

• 11.2. Conditional Clauses

• 11.3. Main Clauses and Result Clauses

• 11.4. Protasis and Apodosis

• 11.5. Real Conditions

• 11.6. Open Conditions

• 11.7. Remote Conditions

• 11.8. Unreal Conditions

• 11.9. Counterfactual Conditions

• 11.10. Positive and Negative Conditions

• 11.11. Conditional Clauses with Modal Verbs

• 11.12. Conditional Clauses Without If

• 11.13. Conditional Meaning and Time Reference

12. Zero Conditional Constructions

• 12.1. Definition of Zero Conditional

• 12.2. General Truths

• 12.3. Scientific Facts

• 12.4. Habitual Situations

• 12.5. Cause-and-Effect Relationships

• 12.6. Present Simple in Both Clauses

• 12.7. Zero Conditional with When

• 12.8. Zero Conditional with Imperatives

• 12.9. Zero Conditional vs. First Conditional

13. First Conditional Constructions

• 13.1. Definition of First Conditional

• 13.2. Realistic Future Possibilities

• 13.3. Present Simple in the If-Clause

• 13.4. Will in the Main Clause

• 13.5. First Conditional with May

• 13.6. First Conditional with Might

• 13.7. First Conditional with Can

• 13.8. First Conditional with Should

• 13.9. First Conditional with Imperatives

• 13.10. First Conditional with Present Perfect

• 13.11. First Conditional with Present Continuous

• 13.12. Future Reference Without Will in the If-Clause

• 13.13. First Conditional vs. Second Conditional

14. Second Conditional Constructions

• 14.1. Definition of Second Conditional

• 14.2. Unreal Present Situations

• 14.3. Hypothetical Future Situations

• 14.4. Past Simple in the If-Clause

• 14.5. Would + Base Verb

• 14.6. Could + Base Verb

• 14.7. Might + Base Verb

• 14.8. Second Conditional with Were

• 14.9. Second Conditional with Were to

• 14.10. Improbable Future Events

• 14.11. Imaginary Situations

• 14.12. Hypothetical Advice

• 14.13. Second Conditional vs. First Conditional

• 14.14. Second Conditional vs. Third Conditional

15. Third Conditional Constructions

• 15.1. Definition of Third Conditional

• 15.2. Unreal Past Situations

• 15.3. Past Counterfactual Statements

• 15.4. Past Perfect in the If-Clause

• 15.5. Would Have + Past Participle

• 15.6. Could Have + Past Participle

• 15.7. Might Have + Past Participle

• 15.8. Imaginary Past Results

• 15.9. Expressions of Regret

• 15.10. Criticism of Past Actions

• 15.11. Alternative Past Outcomes

• 15.12. Third Conditional vs. Second Conditional

• 15.13. Third Conditional vs. Past Factual Statements

16. Mixed Conditional Constructions

• 16.1. Definition of Mixed Conditionals

• 16.2. Past Condition with Present Result

• 16.3. Present Condition with Past Result

• 16.4. Past Condition with Future Result

• 16.5. Present Condition with Future Result

• 16.6. Different Time References in Conditional Clauses

• 16.7. Mixed Conditionals with Would

• 16.8. Mixed Conditionals with Could

• 16.9. Mixed Conditionals with Might

• 16.10. Logical Relationships in Mixed Conditionals

• 16.11. Common Errors in Mixed Conditionals

17. Conditional Inversion

• 17.1. Definition of Conditional Inversion

• 17.2. Omission of If

• 17.3. Inversion with Had

• 17.4. Inversion with Were

• 17.5. Inversion with Should

• 17.6. Had I Known...

• 17.7. Were I to...

• 17.8. Should You Need...

• 17.9. Negative Conditional Inversion

• 17.10. Formal and Literary Conditional Inversion

• 17.11. Conditional Inversion vs. Ordinary Questions

18. Alternative Conditional Expressions

• 18.1. Unless

• 18.2. Provided That

• 18.3. Providing That

• 18.4. As Long As

• 18.5. So Long As

• 18.6. On Condition That

• 18.7. Only If

• 18.8. Even If

• 18.9. In Case

• 18.10. Suppose

• 18.11. Supposing

• 18.12. Assuming That

• 18.13. Given That

• 18.14. Otherwise

• 18.15. Or Else

• 18.16. But For

• 18.17. Without

• 18.18. If It Were Not For

• 18.19. If It Had Not Been For

• 18.20. Meaning Differences Among Conditional Expressions

19. Wish-Constructions

• 19.1. Definition of Wish-Constructions

• 19.2. Wish + Past Simple

• 19.3. Wish + Past Perfect

• 19.4. Wish + Would

• 19.5. Wish + Could

• 19.6. Wishes About the Present

• 19.7. Wishes About the Past

• 19.8. Wishes About the Future

• 19.9. Wishes Expressing Regret

• 19.10. Wishes Expressing Dissatisfaction

• 19.11. Wishes Expressing Desired Change

• 19.12. I Wish I Were...

• 19.13. I Wish I Had...

• 19.14. I Wish You Would...

• 19.15. Wish vs. Hope

• 19.16. Common Errors with Wish

20. If Only-Constructions

• 20.1. Definition of If Only

• 20.2. If Only + Past Simple

• 20.3. If Only + Past Perfect

• 20.4. If Only + Would

• 20.5. If Only + Could

• 20.6. Present Regret

• 20.7. Past Regret

• 20.8. Future Wishes

• 20.9. Expressing Strong Desire

• 20.10. Expressing Frustration

• 20.11. If Only vs. Wish

• 20.12. If Only vs. Conditional If

21. As If and As Though-Constructions

• 21.1. Definition and Functions

• 21.2. As If + Present Simple

• 21.3. As If + Past Simple

• 21.4. As If + Past Perfect

• 21.5. As Though + Indicative Forms

• 21.6. As Though + Hypothetical Past Forms

• 21.7. Realistic Comparisons

• 21.8. Unreal Comparisons

• 21.9. Hypothetical Present Comparisons

• 21.10. Hypothetical Past Comparisons

• 21.11. As If with Were

• 21.12. As If vs. Like

• 21.13. Speaker Attitude in As If Constructions

22. Would Rather and Would Sooner-Constructions

• 22.1. Definition of Would Rather

• 22.2. Would Rather + Base Verb

• 22.3. Would Rather + Subject + Past Simple

• 22.4. Would Rather + Subject + Past Perfect

• 22.5. Present Preferences

• 22.6. Future Preferences

• 22.7. Past Preferences

• 22.8. Preferences About Other People's Actions

• 22.9. Negative Would Rather Constructions

• 22.10. Would Sooner Constructions

• 22.11. Would Rather vs. Prefer

• 22.12. Would Rather vs. Had Better

23. It's Time and It's High Time-Constructions

• 23.1. Definition and Usage

• 23.2. It's Time + Past Simple

• 23.3. It's High Time + Past Simple

• 23.4. It's About Time + Past Simple

• 23.5. It's Time + To-Infinitive

• 23.6. It's Time For + Noun Phrase

• 23.7. Expressing Urgency

• 23.8. Expressing Criticism

• 23.9. Past-Tense Forms with Present Meaning

• 23.10. It's Time vs. It's High Time

24. Suppose, Supposing, and Imagine-Constructions

• 24.1. Definition of Suppositional Constructions

• 24.2. Suppose + Present Simple

• 24.3. Suppose + Past Simple

• 24.4. Suppose + Past Perfect

• 24.5. Supposing + Hypothetical Clause

• 24.6. Imagine + Hypothetical Clause

• 24.7. What If + Present Simple

• 24.8. What If + Past Simple

• 24.9. What If + Past Perfect

• 24.10. Imaginary Scenarios

• 24.11. Hypothetical Questions

• 24.12. Predictions Based on Assumptions

• 24.13. Thought Experiments

• 24.14. Suppose vs. Assume

25. Modal Verbs in Hypothetical Constructions

• 25.1. Modal Verbs and Hypothetical Meaning

• 25.2. Would for Imaginary Results

• 25.3. Could for Hypothetical Ability

• 25.4. Might for Hypothetical Possibility

• 25.5. Should for Tentative Conditions

• 25.6. May for Possibility

• 25.7. Will vs. Would

• 25.8. Can vs. Could

• 25.9. May vs. Might

• 25.10. Modal Perfect Constructions

• 25.11. Would Have + Past Participle

• 25.12. Could Have + Past Participle

• 25.13. Might Have + Past Participle

• 25.14. Should Have + Past Participle

• 25.15. Modal Remoteness and Politeness

26. Hypothetical Meaning Through Tense Remoteness

• 26.1. Definition of Modal Remoteness

• 26.2. Past Forms with Present Meaning

• 26.3. Past Forms with Future Meaning

• 26.4. Past Perfect for Unreal Past Situations

• 26.5. Backshifting for Hypothetical Meaning

• 26.6. Temporal Distance vs. Psychological Distance

• 26.7. Hypothetical Meaning Without Past-Time Reference

• 26.8. Remoteness in Conditional Clauses

• 26.9. Remoteness in Wish-Constructions

• 26.10. Remoteness in Polite Requests

• 26.11. Remoteness in Tentative Statements

27. Hypothetical Constructions in Polite Language

• 27.1. Hypothetical Forms for Politeness

• 27.2. Would You Mind...

• 27.3. Could You Possibly...

• 27.4. I Would Appreciate It If...

• 27.5. I Was Wondering If...

• 27.6. Would It Be Possible...

• 27.7. If You Would Kindly...

• 27.8. Tentative Suggestions

• 27.9. Indirect Requests

• 27.10. Diplomatic Disagreement

• 27.11. Formal vs. Informal Politeness

• 27.12. Hypothetical Language in Professional Communication

28. Unreal and Counterfactual Constructions

• 28.1. Definition of Counterfactuality

• 28.2. Counterfactual Present

• 28.3. Counterfactual Past

• 28.4. Counterfactual Future Scenarios

• 28.5. Contrary-to-Fact Conditions

• 28.6. Counterfactual Results

• 28.7. Alternative Histories

• 28.8. Missed Opportunities

• 28.9. Regret and Blame

• 28.10. Counterfactual Causation

• 28.11. Counterfactual Reasoning

• 28.12. Counterfactuality vs. Improbability

• 28.13. Counterfactual Meaning in Context

29. Hypothetical Meaning in Questions

• 29.1. Hypothetical Yes/No Questions

• 29.2. Hypothetical Wh-Questions

• 29.3. What Would You Do If...?

• 29.4. What Would Happen If...?

• 29.5. How Would You Feel If...?

• 29.6. What If...? Questions

• 29.7. Questions About Imaginary Situations

• 29.8. Questions About Unreal Past Events

• 29.9. Hypothetical Questions in Interviews

• 29.10. Hypothetical Questions in Academic Discussions

• 29.11. Hypothetical Questions in Problem-Solving

30. Hypothetical Meaning in Reported Speech

• 30.1. Reporting Conditional Sentences

• 30.2. Reporting Hypothetical Statements

• 30.3. Reporting Wishes

• 30.4. Reporting Suggestions

• 30.5. Reporting Recommendations

• 30.6. Reporting Demands

• 30.7. Reporting Subjunctive Clauses

• 30.8. Backshifting of Tenses

• 30.9. Retaining Hypothetical Meaning

• 30.10. Reporting Modal Verbs

• 30.11. Direct vs. Indirect Hypothetical Speech

31. Hypothetical Meaning in Academic and Scientific English

• 31.1. Hypothesis Formation

• 31.2. Expressing Assumptions

• 31.3. Describing Theoretical Scenarios

• 31.4. Presenting Thought Experiments

• 31.5. Formulating Conditional Predictions

• 31.6. Expressing Uncertainty

• 31.7. Discussing Possible Outcomes

• 31.8. Presenting Counterfactual Explanations

• 31.9. Hypothetical Reasoning in Mathematics

• 31.10. Hypothetical Reasoning in Physics

• 31.11. Hypothetical Reasoning in Scientific Research

• 31.12. Distinguishing Hypotheses from Established Facts

• 31.13. Hedging in Academic Writing

• 31.14. Modal Verbs in Research Papers

• 31.15. Precision in Scientific Conditional Statements

32. Advanced Conditional and Hypothetical Structures

• 32.1. Implied Conditions

• 32.2. Elliptical Conditional Clauses

• 32.3. Conditional Clauses with Should

• 32.4. Conditional Clauses with Were To

• 32.5. Conditional Clauses with Happen To

• 32.6. Conditional Clauses with If It Weren't For

• 32.7. Conditional Clauses with If It Hadn't Been For

• 32.8. Conditional Meaning with But For

• 32.9. Conditional Meaning with Without

• 32.10. Conditional Meaning with Otherwise

• 32.11. Concessive Conditionals

• 32.12. Unconditional Constructions

• 32.13. Biscuit Conditionals

• 32.14. Relevance Conditionals

• 32.15. Speech-Act Conditionals

• 32.16. Conditional Coordination

• 32.17. Conditional Constructions in Complex Sentences

33. Mood, Modality, and Speaker Attitude

• 33.1. Epistemic Modality

• 33.2. Deontic Modality

• 33.3. Dynamic Modality

• 33.4. Degrees of Certainty

• 33.5. Degrees of Possibility

• 33.6. Degrees of Probability

• 33.7. Obligation and Necessity

• 33.8. Permission and Prohibition

• 33.9. Desire and Intention

• 33.10. Doubt and Skepticism

• 33.11. Unrealistic Expectations

• 33.12. Speaker Commitment to Propositions

• 33.13. Evidentiality and Epistemic Stance

34. Mood and Hypothetical Constructions in Formal and Informal English

• 34.1. Formal Subjunctive Usage

• 34.2. Informal Subjunctive Alternatives

• 34.3. British English Usage

• 34.4. American English Usage

• 34.5. Spoken vs. Written Hypothetical Structures

• 34.6. Literary Hypothetical Expressions

• 34.7. Legal and Administrative Subjunctives

• 34.8. Academic Hypothetical Expressions

• 34.9. Conversational Hypothetical Expressions

• 34.10. Archaic Subjunctive Forms

• 34.11. Register and Stylistic Appropriateness

35. Common Grammatical Errors

• 35.1. Incorrect Use of Was and Were

• 35.2. Incorrect Verb Forms After Wish

• 35.3. Incorrect Verb Forms After If Only

• 35.4. Incorrect Verb Forms After As If

• 35.5. Incorrect Verb Forms After Would Rather

• 35.6. Incorrect Verb Forms After It's Time

• 35.7. Misuse of Would in Conditional If-Clauses

• 35.8. Confusion Between Second and Third Conditionals

• 35.9. Errors in Mixed Conditionals

• 35.10. Incorrect Modal Perfect Constructions

• 35.11. Incorrect Conditional Inversion

• 35.12. Incorrect Mandative Subjunctive Forms

• 35.13. Misuse of Unless

• 35.14. Confusion Between Wish and Hope

• 35.15. Confusion Between Real and Unreal Conditions

• 35.16. Confusion Between Hypothetical and Past-Time Meaning

• 35.17. Incorrect Negation in Subjunctive Clauses

• 35.18. Errors in Subject–Verb Agreement with the Subjunctive

36. Sentence Transformation and Grammar Practice

• 36.1. Indicative-to-Subjunctive Transformation

• 36.2. Real-to-Unreal Conditional Transformation

• 36.3. First-to-Second Conditional Transformation

• 36.4. Second-to-Third Conditional Transformation

• 36.5. Conditional-to-Wish Transformation

• 36.6. Wish-to-If Only Transformation

• 36.7. Conditional Inversion Transformation

• 36.8. If to Unless Transformation

• 36.9. If to Provided That Transformation

• 36.10. Rewriting with But For

• 36.11. Rewriting with Without

• 36.12. Rewriting with Otherwise

• 36.13. Sentence Completion Exercises

• 36.14. Error Identification Exercises

• 36.15. Error Correction Exercises

• 36.16. Contextual Grammar Exercises

• 36.17. Multiple-Choice Grammar Exercises

• 36.18. Advanced Sentence Rewriting

37. Advanced Linguistic Analysis

• 37.1. Mood as a Grammatical Category

• 37.2. Morphological Mood vs. Modal Meaning

• 37.3. Irrealis Marking in English

• 37.4. Subjunctive Licensing Environments

• 37.5. Mandative Complements

• 37.6. Modal Auxiliary Scope

• 37.7. Tense–Mood Interaction

• 37.8. Mood–Aspect Interaction

• 37.9. Possible-World Semantics

• 37.10. Counterfactual Semantics

• 37.11. Conditional Antecedents and Consequents

• 37.12. Material Implication vs. Natural-Language Conditionals

• 37.13. Presuppositions and Implicatures

• 37.14. Pragmatics of Hypothetical Statements

• 37.15. Cross-Linguistic Mood Systems

• 37.16. Historical Changes in English Mood

• 37.17. Mood in Descriptive vs. Prescriptive Grammar

Summary of the Topic Structure

The 37 major sections can be organized into seven study modules.

Module, Topics, Focus

1. Foundations of Mood: 1–4, Introduction, classification, indicative, imperative

2. Subjunctive Mood: 5–9, Present, past, mandative, formulaic subjunctive

3. Hypothetical Conditionals: 10–18, Hypotheticality, conditional types, inversion, alternatives

4. Special Hypothetical Constructions: 19–24, Wish, if only, as if, would rather, it's time, suppose

5. Modality and Counterfactuality: 25–30, Modal verbs, remoteness, counterfactuals, questions, reported speech

6. Applied and Advanced Usage: 31–34, Academic, scientific, advanced syntactic and stylistic applications

7. Grammar Accuracy and Analysis: 35–37, Common errors, transformations, linguistic analysis

Total: 37 major topics with 437 subtopics.

Terminological note: In contemporary English grammar, the indicative, imperative, and subjunctive are central mood categories. Labels such as conditional, interrogative, optative, and potential are useful for comparing grammatical traditions, but they are not all universally recognized as separate morphological moods in modern English.