Approaches to teaching argument structure alternations and valency-changing morphology to clarify transitivity patterns for learners.
This article presents practical, classroom-tested strategies for teaching how argument structure shifts and valency altering morphology affect transitivity, with clear examples from African languages and learner-friendly activities.
In many African languages, verbs frequently exhibit transitivity that shifts according to voice, mood, or applicative constructions, creating a dynamic system for learners to master. A central teaching aim is to foreground the link between argument structure and meaning, so students see how subject roles and object prominence can change across contexts. Begin with simple, polarity-based contrasts, then layer more complex alternations such as causative and applicative forms. Use authentic data drawn from everyday speech and locally relevant texts to illustrate how minor morphological changes produce meaningful shifts in who is acting upon whom. Scaffold comprehension with visual diagrams and sentence transformations.
To stabilize understanding, introduce a stepwise progression that moves from isolated forms to integrated sentences. Start with base transitive verbs and identify the core arguments before exploring how valency can be increased or decreased. Provide parallel examples in both the learner’s L1 and the target language, highlighting where the transitive relation holds and where it is altered by morphology. Encourage learners to paraphrase each variant, noting which participant is promoted or demoted in the verbal construction. Regular practice should emphasize consistency in marking arguments, so students can predict outcomes in unfamiliar sentences.
Stepwise, color-coded activities that build fluency and analytic insight.
A practical approach to lesson design is to embed oral drilling, reading, and writing tasks around a single morpho-syntactic pathway per week. For instance, a week might focus on passive-like alternations, then move to applicatives and reciprocals, culminating in synthetic verbs that compress multiple roles into one morphology. Activities should balance input from native speakers, peer collaboration, and teacher modeling. When students encounter new forms, prompt them to locate the core verb, identify the arguments, and map how each transformation shifts the transitivity pattern. Close the loop with short assessments that track progress over time and adjust pacing as needed.
Visual supports enhance retention, especially for learners developing comfort with non-canonical word orders. Students can work with color-coded trees or skeleton sentences that isolate the predicate and its arguments, then progressively add affixes that alter valency. Encourage students to manipulate the sentences themselves, swapping roles and testing predictions about who is affected by the action. Provide glossed examples and bilingual glossaries to assist comprehension during the early stages. Over time, reduce scaffolds, guiding learners to apply similar reasoning to more complex verbs and higher-order constructions without constant prompting.
Concrete practice with real-world texts and meaningful outcomes.
The graduate step in instruction involves introducing cross-linguistic comparisons so learners see that transitivity patterns recur across languages, even when expressed through different morphological devices. When discussing applicatives, show how the object of a typical transitive clause can become an indirect or beneficiary argument, altering the focus and participant hierarchy. Use sentence pairs that maintain the same core event while varying the valency to demonstrate what changes and what remains constant. Learners should articulate the functional consequences of these changes, describing how meaning shifts align with syntactic reorganization and pragmatic emphasis.
Another effective strategy is task-based learning that centers on problem-solving within authentic communicative goals. For example, learners could be asked to reconstruct a paragraph in which several agents switch roles due to morphological modifications, then justify why each change affects the thematic structure. This kind of activity reinforces procedural knowledge and helps retain long-term interpretations of transitivity. Assessment should capture both accuracy in form and adequacy of meaning, ensuring that students grasp why altering valency matters for discourse coherence and agent-patient relationships.
Reflective practice paired with authentic textual exploration.
A key resource for learners is a curated corpus of sentences drawn from contemporary media, folklore, and everyday conversation that illustrate argument structure alternations in natural contexts. Teachers can guide students through a reading protocol that identifies the base verb, arguments, and any valency-changing markers, followed by a speaking task where learners rephrase or translate the sentence while preserving the same semantic roles. Regular discussions on how context, intention, and emphasis influence choice of structure help students make sense of what appears as irregular at first glance. Over time, the corpus can expand to include more diverse dialects and registers.
To deepen mastery, implement reflective journals in which students record patterns they encounter, issues they struggle with, and strategies they used to decode complex morphologies. Peer feedback sessions should focus on clarity of argument roles and the logical coherence of the transitivity pattern in produced sentences. Teachers can provide diagnostic prompts that target specific alternations, such as how an applicative changes who benefits from the action, or how a causative reassigns the patient’s role. Consistent reflection supports transfer of classroom insights into spontaneous speech.
Final considerations for sustainable, inclusive instruction.
A comprehensive assessment design blends formative and summative measures to capture subtle shifts in learners’ understanding of valency. Formative checks might include sentence transformation tasks, where students rewrite a base sentence to reflect a new argument structure, or a quick-check quiz on affix functions that govern transitivity. Summative tasks can involve short narratives that require readers to track multiple event participants across clauses and to explain how each morphological choice affects interpretation. Clear rubrics should reward accuracy, coherence, and the ability to justify decisions with linguistic evidence.
Additionally, educators should pay attention to language-specific idiosyncrasies that influence teaching strategies. Some languages implement valency changes through affixes attached to the verb, others rely on serial verb constructions or noun incorporation to convey similar meanings. By presenting these differences side by side, learners become adept at comparing typologically diverse systems. Lessons can profit from guest speakers, interactive language maps, and audio recordings that demonstrate native fluency with authentic intonation and rhythm, reinforcing the practical relevance of theoretical concepts.
Inclusive pedagogy requires acknowledging diverse learner backgrounds and providing multiple entry points into complex syntax. Some students may benefit from more visual or kinesthetic activities that ground abstract ideas in physical actions or manipulatives, while others thrive with analytic exercises and formal notation. To support this diversity, design flexible lesson plans that can be adapted for smaller groups, one-on-one tutoring, or large classes. Emphasize collaboration and negotiated meanings, encouraging learners to explain their reasoning to peers. When learners articulate their thought process aloud, tutors can correct misinterpretations and guide them toward accurate analyses of argument structure and valency.
Finally, ensure that assessment practices are transparent and motivating, offering clear pathways for improvement. Provide exemplars that demonstrate strong performance in identifying transitivity shifts and in explaining why valency-changing morphology yields particular interpretations. Encourage students to set personal goals and monitor progress with periodic check-ins. By aligning instruction with real communicative needs and highlighting the practical applications of these grammatical tools, teachers can foster confidence, curiosity, and lifelong competence in analyzing how arguments move through sentences.