Topic-Comment and Information Structure in Yoruba

Overview

At the C1 level, understanding information structure -- how speakers organize known versus new information -- reveals the deeper logic of Yoruba sentence construction. Topic-comment structures place a known element (the topic) at the sentence beginning, followed by a comment about it. This interacts with focus constructions and relative clauses to create a sophisticated system for managing what the listener knows and what is new.

Topicalization moves an element to sentence-initial position, often with a pause: "Ìwé yẹn, mo ti kà á" (That book, I have read it). Here, "ìwé yẹn" is the topic (already known to both speaker and listener), and "mo ti kà á" is the comment (new information about it). Note the resumptive pronoun "á" (it) in the comment clause, which refers back to the topic.

The interaction between topic, focus, and background information creates the full information structure of Yoruba discourse. Topics establish what is being discussed, focus highlights new or contrastive information, and background provides supporting context. Understanding these distinctions is essential for producing natural, coherent Yoruba discourse.

How It Works

Structure	Pattern	Example	Function
Topic-comment	Topic, S + V + pronoun	Ìwé yẹn, mo ti kà á.	Known topic + comment
Focus	Focus + ni + clause	Ìwé ni mo kà.	New/contrastive info
Neutral	S + V + O	Mo kà ìwé.	Default structure

Examples in Context

Yoruba	English	Note
Ìwé yẹn, mo ti kà á.	That book, I have read it.	Topicalized object
Adé, ó ti lọ sí ilé.	As for Ade, he has gone home.	Topicalized subject
Ohun tí mo mọ̀ ni pé ó dára.	What I know is that it is good.	Cleft + topic
Iṣẹ́ náà, ó ti parí.	The work, it is finished.	Topic + comment
Oúnjẹ yẹn, kò dùn rárá.	That food, it was not tasty at all.	Topic + negative comment

Common Mistakes

Confusing Topicalization and Focus

• Wrong: Treating topic-initial sentences and focus-initial sentences as identical.
• Right: Topics use a pause and resumptive pronoun; focus uses ni without resumption.
• Why: Topic (known info, comma, resumptive pronoun) and focus (new info, ni, gap) are structurally and functionally different.

Omitting the Resumptive Pronoun

• Wrong: Ìwé yẹn, mo ti kà. (missing the resumptive "á")
• Right: Ìwé yẹn, mo ti kà á. (with resumptive pronoun)
• Why: Topicalized elements typically require a resumptive pronoun in the comment clause.

Practice Tips

1. Practice topicalizing different sentence elements: Take a sentence and move different parts to topic position, adding resumptive pronouns.
2. Distinguish topic from focus in reading: When you see sentence-initial elements, determine whether they are topics or focused elements.
3. Listen for pauses after topics: In natural speech, topics are followed by a brief pause before the comment.

Related Concepts

• Prerequisite: Focus and Cleft Constructions -- focus is the complement of topic