B2 (Upper Intermediate)Lesson 8: Advanced Verb and Clause Patterns
Valency describes the number and types of arguments a verb selects, including the subject and selected complements. Transitivity is one part of that wider system.
Valency = argument frame of the verb, including its subject and selected complements
Transitivity is one part of valency
Some verbs change meaning across patterns
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intransitive / transitive direct / transitive indirect / bitransitive patterns
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When a verb feels hard to use, the real issue is often the complement frame, not the conjugation. Valency makes that frame explicit.
Intransitive verbs do not require an object: "cheguei", "saí".
Transitive direct verbs typically take a direct object: "comprei o livro".
Transitive indirect verbs require a prepositional complement: "gostar de música", "obedecer a regras".
Bitransitive verbs can take two complements: "dar algo a alguém", "mostrar algo para alguém".
Some verbs shift meaning when the valency changes, so transitivity must be learned with usage.
Valency is broader than a school label because it covers the whole argument frame, including the subject and selected complements.
This lesson supports regency, pronouns, passive voice, and clause analysis.
| Portuguese | Meaning |
|---|---|
| Cheguei cedo. | I arrived early. |
| Comprei o livro. | I bought the book. |
| Gosto de música. | I like music. |
| Mostrei o caminho para ela. | I showed her the way. |
| Isso não cabe aqui. | That does not fit here. |
| Esse quarto serve de escritório. | This room serves as an office. |
Some verbs allow multiple frames with different interpretations.
Colloquial usage sometimes reduces or reshapes complements in speech.
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