1. Introduction to Noun Clauses

• Definition of a Noun Clause

• Characteristics of Noun Clauses

• Structure of Noun Clauses

• Functions of Noun Clauses

• Finite Noun Clauses

• Non-Finite Noun Clauses

• Noun Clauses vs. Noun Phrases

• Noun Clauses vs. Other Subordinate Clauses

• Identification of Noun Clauses

• Importance of Noun Clauses in Sentence Construction

2. Types of Noun Clauses

• Declarative Noun Clauses

• Interrogative Noun Clauses

• Exclamative Noun Clauses

• That-Clauses

• Wh-Clauses

• Whether-Clauses

• If-Clauses

• Free Relative Clauses (Nominal Relative Clauses)

• Finite Complement Clauses

• Non-Finite Complement Clauses

3. Functions of Noun Clauses in Sentences

• Noun Clauses as Subjects

• Noun Clauses as Direct Objects

• Noun Clauses as Subject Complements

• Noun Clauses as Complements of Adjectives

• Noun Clauses as Complements of Prepositions

• Noun Clauses as Appositive or Content Clauses

• Noun Clauses as Complements of Nouns

• Noun Clauses as Extraposed Subjects

• Noun Clauses as Complements of Verbs

• Noun Clauses in Complex Sentences

4. Noun Clauses Introduced by That

• Definition of That-Clauses

• Structure of That-Clauses

• That-Clauses as Subjects

• That-Clauses as Objects

• That-Clauses as Subject Complements

• That-Clauses after Adjectives

• That-Clauses after Nouns

• That-Clauses after Reporting Verbs

• Optional Omission of That

• Mandatory or Preferred Retention of That

• Restrictions on That-Clause Placement

• Formal and Informal Uses of That-Clauses

5. Noun Clauses Introduced by Wh-Words

• What-Clauses

• Who-Clauses

• Whom-Clauses

• Whose-Clauses

• Which-Clauses

• When-Clauses

• Where-Clauses

• Why-Clauses

• How-Clauses

• Whatever, Whoever, and Whichever Clauses

• Embedded Wh-Questions

• Wh-Word Functions within Clauses

• Word Order in Wh-Noun Clauses

• Wh-Interrogative vs. Free Relative Clauses

6. Noun Clauses Introduced by Whether and If

• Definition of Yes/No Interrogative Clauses

• Structure of Whether-Clauses

• Structure of If-Clauses

• Whether vs. If

• Whether ... or Not

• Whether ... or ...

• Embedded Yes/No Questions

• Whether-Clauses as Subjects

• Whether-Clauses as Complements

• If-Clauses as Verb Complements

• Restrictions on If in Interrogative Complement Clauses

• Whether before Infinitives

• Whether after Prepositions

• Interrogative If-Clauses vs. Conditional If-Clauses

7. Noun Clauses as Subjects

• Subject Position of Noun Clauses

• That-Clauses as Subjects

• Wh-Clauses as Subjects

• Whether-Clauses as Subjects

• Subject Noun Clauses and Verb Agreement

• Long or Heavy Subject Clauses

• Formal Subject Clauses

• Subject Extraposition

• Anticipatory It

• Subject Clause vs. Extraposed Clause

8. Noun Clauses as Objects

• Direct Object Noun Clauses

• Object Clauses after Reporting Verbs

• Object Clauses after Mental-State Verbs

• Object Clauses after Communication Verbs

• Object Clauses after Perception Verbs

• Object Clauses after Verbs of Knowledge

• Object Clauses after Verbs of Belief

• Object Clauses after Verbs of Doubt

• Verb + That-Clause Patterns

• Verb + Wh-Clause Patterns

• Verb + Whether/If-Clause Patterns

• Object Clause Position

• Omission of Complementizers in Object Clauses

9. Noun Clauses as Subject Complements

• Definition of Subject Complement Clauses

• Noun Clauses after Linking Verbs

• That-Clauses after Be

• Wh-Clauses after Be

• Whether-Clauses after Be

• Predicative Complement Clauses

• Explanation and Identification through Complement Clauses

• Subject Clause vs. Subject Complement Clause

• Complement Clauses in Copular Constructions

10. Noun Clauses after Prepositions

• Preposition + Wh-Clause

• Preposition + Whether-Clause

• Restrictions on Preposition + That-Clause

• Prepositional Complement Clauses

• Embedded Questions after Prepositions

• Preposition Stranding in Related Constructions

• Formal Prepositional Structures

• Common Preposition–Clause Combinations

11. Introduction to Complement Clauses

• Definition of a Complement Clause

• Characteristics of Complement Clauses

• Functions of Complement Clauses

• Complements vs. Adjuncts

• Complement Clauses vs. Relative Clauses

• Complement Clauses vs. Adverbial Clauses

• Complement Clauses vs. Traditional Noun Clauses

• Finite vs. Non-Finite Complement Clauses

• Clausal Complementation

• Complementation Patterns

• Complement Selection and Licensing

12. Types of Complement Clauses

• Declarative Complement Clauses

• Interrogative Complement Clauses

• Exclamative Complement Clauses

• Finite That-Complement Clauses

• Finite Wh-Complement Clauses

• Finite Whether/If-Complement Clauses

• To-Infinitive Complement Clauses

• Bare Infinitive Complement Clauses

• -Ing Participial Complement Clauses

• -Ed Participial Complement Clauses

• Subjunctive Complement Clauses

• Verbless Complement Clauses in Selected Analyses

13. Verb Complement Clauses

• Verb + That-Clause

• Verb + Wh-Clause

• Verb + Whether/If-Clause

• Verb + To-Infinitive Clause

• Verb + -Ing Clause

• Verb + Object + To-Infinitive

• Verb + Object + Bare Infinitive

• Verb + Object + -Ing Clause

• Verb + Object + -Ed Clause

• Verbs Allowing Multiple Complement Patterns

• Verbs with Restricted Complement Patterns

• Changes in Meaning across Complement Patterns

14. Adjective Complement Clauses

• Adjective + That-Clause

• Adjective + To-Infinitive Clause

• Adjective + Wh-Clause

• Adjective + Whether-Clause

• Adjectives of Certainty

• Adjectives of Emotion

• Adjectives of Evaluation

• Adjectives of Possibility

• Adjectives of Necessity

• Adjective Complementation with Extraposed It

• Adjective Complement Clause vs. Adverbial Clause

15. Noun Complement Clauses

• Noun + That-Clause

• Noun + Wh-Clause

• Noun + Whether-Clause

• Noun + To-Infinitive Clause

• Complement Clauses after Abstract Nouns

• Complement Clauses after Reporting Nouns

• Complement Clauses after Belief and Knowledge Nouns

• Complement Clauses after Decision and Intention Nouns

• Content Clauses

• Noun Complement Clauses vs. Relative Clauses

• Noun Complement Clauses vs. Appositive Clauses

16. Infinitival Complement Clauses

• Definition of Infinitival Clauses

• To-Infinitive Complement Clauses

• Bare Infinitive Complement Clauses

• Infinitive Clauses as Verb Complements

• Infinitive Clauses as Adjective Complements

• Infinitive Clauses as Noun Complements

• Infinitive Clauses as Subject Complements

• Perfect Infinitive Clauses

• Passive Infinitive Clauses

• Progressive Infinitive Clauses

• Negation of Infinitive Clauses

• Subject Interpretation in Infinitive Clauses

• Infinitival Clauses with Expressed Subjects

17. Gerund-Participle Complement Clauses

• Definition of -Ing Complement Clauses

• -Ing Clauses as Verb Complements

• -Ing Clauses after Prepositions

• -Ing Clauses as Adjective Complements

• -Ing Clauses as Noun Complements

• -Ing Clauses as Subjects

• Perfect -Ing Clauses

• Passive -Ing Clauses

• Negation in -Ing Clauses

• Expressed Subjects in -Ing Clauses

• Possessive vs. Non-Possessive Subjects

• Gerund-Participle Clauses vs. Present Participial Modifiers

18. Past-Participle Complement Clauses

• Definition of Past-Participle Clauses

• Verb + Object + Past Participle

• Past-Participle Clauses in Complex Complementation

• Causative Constructions with Past Participles

• Perception Constructions with Past Participles

• Resultative Constructions

• Passive Interpretation of Past-Participle Clauses

• Past-Participle Complements vs. Adjective Complements

19. Complementizers and Clause Markers

• Definition of Complementizers

• Complementizer That

• Complementizer Whether

• Interrogative Marker If

• Interrogative Wh-Words

• Infinitival Marker To

• Zero Complementizer

• Complementizer Omission

• Complementizer Retention

• Complementizer Distribution

• Complementizer Selection

• Complementizer vs. Relative Pronoun

• Complementizer vs. Subordinating Conjunction

20. Embedded Questions as Complement Clauses

• Definition of Embedded Questions

• Embedded Yes/No Questions

• Embedded Wh-Questions

• Direct vs. Indirect Questions

• Statement Word Order in Embedded Questions

• Absence of Subject–Auxiliary Inversion

• Auxiliary Do in Embedded Questions

• Embedded Questions after Verbs

• Embedded Questions after Adjectives

• Embedded Questions after Nouns

• Embedded Questions after Prepositions

• Politeness and Indirect Question Structures

21. Word Order in Noun and Complement Clauses

• Subject–Verb–Object Order

• Embedded Declarative Word Order

• Embedded Interrogative Word Order

• Subject–Auxiliary Inversion Restrictions

• Position of Complement Clauses

• Fronting of Complement Clauses

• Extraposition of Complement Clauses

• Heavy Clause Placement

• Complement Clause Coordination

• Clause Order in Complex Sentences

22. Tense and Aspect in Complement Clauses

• Present Tense in Complement Clauses

• Past Tense in Complement Clauses

• Future-Time Reference

• Present Perfect in Complement Clauses

• Past Perfect in Complement Clauses

• Progressive Aspect

• Perfect Progressive Aspect

• Sequence of Tenses

• Backshifting after Reporting Verbs

• Exceptions to Backshifting

• Tense Relationships between Main and Subordinate Clauses

23. Mood and Modality in Complement Clauses

• Indicative Mood

• Subjunctive Mood

• Mandative Subjunctive

• Should-Mandative Construction

• Modal Verbs in Complement Clauses

• Necessity and Obligation

• Possibility and Probability

• Permission and Ability

• Hypothetical Complement Clauses

• Factual vs. Non-Factual Complements

24. Negation in Noun and Complement Clauses

• Negation within Noun Clauses

• Negation within Complement Clauses

• Main Clause vs. Subordinate Clause Negation

• Negative That-Clauses

• Negative Wh-Clauses

• Negative Infinitival Clauses

• Negative -Ing Clauses

• Neg-Raising

• Scope of Negation

• Negative Polarity Items

• Not and Never in Complement Clauses

25. Subject Control and Object Control

• Definition of Control Constructions

• Subject-Control Verbs

• Object-Control Verbs

• Understood Subjects of Non-Finite Clauses

• Control in To-Infinitive Clauses

• Control in -Ing Clauses

• Optional vs. Obligatory Control

• Arbitrary Control

• Control vs. Raising

• Semantic Interpretation of Controlled Subjects

26. Raising Constructions

• Definition of Raising

• Subject-to-Subject Raising

• Subject-to-Object Raising

• Raising Verbs

• Raising Adjectives

• Raising vs. Control

• Expletive Subjects in Raising

• Raising with Seem and Appear

• Raising with Expect and Believe

• Meaning and Structure of Raising Constructions

27. Catenative Verb Constructions

• Definition of Catenative Verbs

• Simple Catenative Constructions

• Complex Catenative Constructions

• Verb + To-Infinitive

• Verb + Bare Infinitive

• Verb + -Ing Clause

• Verb + Object + Infinitive

• Verbs Allowing Infinitives and -Ing Clauses

• Meaning Changes with Complement Selection

• Catenative Chains

• Catenative Verbs vs. Auxiliary Verbs

28. Reporting Verbs and Complement Clauses

• Reporting Verb + That-Clause

• Reporting Verb + Wh-Clause

• Reporting Verb + Whether/If-Clause

• Reporting Verb + Infinitive

• Reporting Verb + Object + Infinitive

• Statements and Assertions

• Questions and Inquiries

• Commands and Requests

• Suggestions and Recommendations

• Reporting Thoughts and Beliefs

• Reporting Speech vs. Reported Speech Structures

29. Factive and Non-Factive Complement Clauses

• Definition of Factivity

• Factive Verbs

• Non-Factive Verbs

• Factive Adjectives

• Factive Nouns

• Factive That-Clauses

• Presupposition of Truth

• Non-Factive Propositions

• Implicative Verbs

• Semi-Factive Predicates

• Factivity and Negation

• Factivity and Questions

30. Extraposition and Anticipatory It

• Definition of Extraposition

• Anticipatory It as a Dummy Subject

• Extraposed That-Clauses

• Extraposed Whether-Clauses

• Extraposed Infinitival Clauses

• Extraposition after Adjectives

• Extraposition after Nouns and Predicates

• Extraposition with Passive Constructions

• Extraposition vs. Subject Clauses

• Information Structure and Extraposition

31. Cleft and Pseudo-Cleft Constructions

• Definition of Cleft Sentences

• It-Cleft Sentences

• Wh-Cleft Sentences

• Pseudo-Cleft Sentences

• Reverse Pseudo-Cleft Sentences

• What-Clauses in Pseudo-Clefts

• Free Relative Clauses

• Focus and Emphasis

• Given and New Information

• Cleft Clauses vs. Complement Clauses

32. Noun Clauses vs. Relative Clauses

• Definition of Relative Clauses

• Noun Clauses vs. Adjective/Relative Clauses

• That as a Complementizer vs. Relative Marker

• Wh-Interrogative Clauses vs. Relative Clauses

• Free Relative Clauses

• Nominal Relative Clauses

• Headed vs. Headless Relative Clauses

• Restrictive Relative Clauses

• Non-Restrictive Relative Clauses

• Ambiguous Clause Structures

• Identification Tests

33. Noun Clauses vs. Adverbial Clauses

• Functional Differences

• Complement Clauses vs. Adjunct Clauses

• If-Interrogative vs. If-Conditional Clauses

• When-Interrogative vs. Temporal Clauses

• Where-Interrogative vs. Locative Clauses

• Why-Interrogative vs. Reason Clauses

• How-Interrogative vs. Manner Clauses

• Position and Mobility Tests

• Semantic Interpretation

• Common Classification Errors

34. Complex Sentences with Noun and Complement Clauses

• Main and Subordinate Clauses

• Matrix Clauses

• Embedded Clauses

• Multiple Complement Clauses

• Nested Complement Clauses

• Coordinated Complement Clauses

• Complement Clauses within Noun Phrases

• Complement Clauses within Adjective Phrases

• Complement Clauses within Verb Phrases

• Recursive Embedding

• Clause Hierarchy

• Ambiguity in Complex Clause Structures

35. Semantic Relationships in Complementation

• Propositional Content

• Questions as Semantic Complements

• Events and Actions as Complements

• Facts and Presuppositions

• Beliefs and Knowledge

• Intentions and Decisions

• Desires and Preferences

• Perceptions and Experiences

• Commands and Obligations

• Certainty and Uncertainty

• Actuality and Hypotheticality

• Complement Selection and Meaning

36. Syntactic Analysis of Complement Clauses

• Constituency of Noun Clauses

• Head–Complement Relationships

• Matrix Clause and Embedded Clause

• Clause Boundaries

• Syntactic Functions of Complement Clauses

• Finite vs. Non-Finite Clause Structure

• Subject Identification

• Complementizer Identification

• Predicate–Argument Structure

• Valency and Subcategorization

• Clause Embedding

• Tree Diagrams

• Bracketed Sentence Analysis

37. Common Errors in Noun Clauses

• Incorrect Embedded Question Word Order

• Unnecessary Subject–Auxiliary Inversion

• Incorrect Use of That

• Incorrect Omission of That

• Confusion between Whether and If

• Incorrect Verb Tense

• Subject–Verb Agreement Errors

• Missing Subjects or Verbs

• Incorrect Complement Clause Placement

• Sentence Fragments

• Run-On Sentences

• Misuse of Relative Pronouns in Noun Clauses

38. Common Errors in Complement Clauses

• Incorrect Verb Complement Patterns

• Infinitive vs. -Ing Form Errors

• Missing Infinitive Marker To

• Unnecessary Infinitive Marker To

• Incorrect Object Placement

• Incorrect Complementizer Selection

• Incorrect Negation Placement

• Incorrect Control Constructions

• Incorrect Raising Constructions

• Incorrect Tense Backshifting

• Incomplete Complement Clauses

• Confusion between Complements and Adjuncts

39. Noun and Complement Clauses in Academic English

• Noun Clauses in Academic Writing

• Complement Clauses in Research Articles

• Reporting Research Findings

• Expressing Hypotheses

• Expressing Assumptions

• Expressing Evidence

• Expressing Certainty and Uncertainty

• Reporting Previous Studies

• Argumentation and Reasoning

• Nominalization and Complementation

• Complex Sentence Construction

• Clarity and Concision in Academic Writing

40. Advanced Topics in Noun and Complement Clauses

• Complementation Theory

• Clausal Argument Structure

• Selectional Restrictions

• Complementizer Phrase (CP)

• Tense Phrase (TP)

• Finiteness and Clause Type

• Control Theory

• Raising Theory

• Binding and Coreference

• Long-Distance Dependencies

• Extraction from Complement Clauses

• Island Constraints

• Embedded Clause Scope

• Presupposition and Factivity

• Information Structure

• Corpus-Based Analysis of Complementation

41. Practice and Assessment Topics

• Identifying Noun Clauses

• Identifying Complement Clauses

• Classifying Clause Types

• Identifying Clause Functions

• Choosing Appropriate Complementizers

• Completing Noun Clauses

• Completing Verb Complement Patterns

• Transforming Direct Questions into Embedded Questions

• Combining Sentences Using Noun Clauses

• Rewriting Sentences Using Complement Clauses

• Correcting Grammatical Errors

• Analyzing Complex Sentences

• Constructing Academic Sentences

• Advanced Grammar Exercises

• TOEFL and IELTS Grammar Applications

Total: 41 major topic categories, covering foundational, intermediate, advanced, and linguistic-analysis aspects of noun clauses and complement clauses.

Important grammatical distinction: In traditional English grammar, noun clause is a functional label for clauses occupying noun-like positions. In modern descriptive grammar, complement clause refers more specifically to a clause licensed as a complement by a verb, noun, adjective, or another head. The two categories overlap substantially, but they are not identical.