Ìjíròrò Ẹ̀kọ́ àti Àlàyé Orísun
Chapter Objectives
By the end of this chapter, you will be able to:
- Attribute an idea or finding to a source using consolidated attribution frames.
- Use complement clauses after verbs of saying, thinking, knowing, and showing to report source content.
- Express contrast between two sources or ideas using consolidated contrast connectors.
- Give a reason for a claim using reason clauses appropriate to academic explanation.
- Use hedging frames to present information cautiously rather than as absolute fact.
- Listen to and read short source-based passages, identifying claims, reasons, and attributed sources.
- Write a short source-based explanation that attributes, contrasts, and hedges appropriately.
Opening Communication Scenario
Adé's supervisor, Ẹnjinia Kúnlé, asks him to prepare a short written explanation for the office newsletter, comparing what two different reports say about community water access in the area. Adé must present each report's findings accurately, note where the two reports disagree, and avoid stating either report's claims as flatly certain when the reports themselves are cautious.
- This chapter teaches how to attribute ideas to sources and report their content using complement clauses.
- It develops contrast, reason, and hedging language inside the functional task of a source-based explanation.
- By the end of the chapter, you will write your own short source-based explanation, following the same structure Adé uses.
Core Vocabulary
The following vocabulary supports academic discussion and source-based explanation. Items marked "Productive (introduced)" are new for this chapter.
| Yorùbá | English | Status |
|---|---|---|
| orísun | source | Productive (introduced) |
| ìjábọ̀ ìwádìí | research report | Productive (introduced) |
| àwárí | finding | Productive (introduced) |
| ìdí | reason | Productive (introduced; previewed Ch2) |
| ìyàtọ̀ | difference, contrast | Productive (introduced) |
| gẹ́gẹ́ bí | according to | Productive (introduced) |
| ó ṣeé ṣe kí | it is possible that (hedge) | Productive (introduced) |
| bí a ṣe fẹ́ mọ̀ | as far as we know (hedge) | Productive (introduced) |
| ìmọ̀ sáyẹ́ǹsì | scientific knowledge | Productive (introduced) |
| àwọn ọ̀mọ̀wé | scholars, researchers | Productive (introduced) |
Pronunciation Focus
Academic explanation is typically delivered more slowly and evenly than meeting talk, with clear pauses between a claim, its source, and its reason. This chapter's pronunciation focus is producing a measured, evenly paced explanation that gives the listener time to track each new idea.
- Practice the attribution phrase gẹ́gẹ́ bí ìjábọ̀ yìí ṣe sọ ("according to what this report says") with steady tone across all four words.
- Pay special attention to ó ṣeé ṣe kí, where tone must remain distinct on each syllable even though the phrase is spoken quickly as a unit.
- Practice pausing briefly between a claim and its attributed source, as a speaker would when citing evidence aloud.
Grammar and Sentence Patterns
This chapter introduces source attribution and complement clauses for reporting source content, and develops contrast, reason, and hedging frames for academic explanation.
Source attribution and complement clauses
Gẹ́gẹ́ bí [orísun] ṣe sọ, [ọ̀rọ̀ àsọyé] pé [àwárí].
Source attribution opens with gẹ́gẹ́ bí ("according to") plus the source, followed by a reporting verb such as sọ ("say") or fi hàn ("show") and a complement clause introduced by pé ("that").
Gẹ́gẹ́ bí ìjábọ̀ àkọ́kọ́ ṣe sọ, omi mímọ́ kò tí ì tó fún gbogbo agbègbè náà.
According to the first report, clean water is not yet sufficient for the whole area.
Contrast between sources with `ṣùgbọ́n` and `bí ó tilẹ̀ jẹ́ pé`
- Ìjábọ̀ àkọ́kọ́ sọ pé omi kò tó; ṣùgbọ́n ìjábọ̀ kejì fi hàn pé ipò náà ti túbọ̀ sunwọ̀n sí i ní ọdún tí ó kọjá. The first report says water is insufficient; but the second report shows that the situation has improved in the past year. ṣùgbọ́n contrast connector, introduced this chapter
- Bí ó tilẹ̀ jẹ́ pé àwọn ìjábọ̀ méjèèjì gbà pé iṣẹ́ kan wà láti ṣe, wọn kò fohùn ṣọ̀kan lórí bí a ṣe lè yanjú rẹ̀. Even though both reports agree that there is work to be done, they do not agree on how to solve it. bí ó tilẹ̀ jẹ́ pé concessive contrast, introduced this chapter
Reason clauses with nítorí pé, introduced for formal requests in Chapter 2, are now applied to academic explanation: àwọn ọ̀mọ̀wé gbà pé àbájáde yìí ṣeé gbára lé nítorí pé wọ́n lo ọ̀nà ìwádìí tí ó bọ́gbọ́n mu ("the scholars accept this result as reliable because they used a sound research method"). In academic use, the reason clause typically explains why a finding should be trusted, not only why a request is being made.
Academic explanation must distinguish confirmed findings from tentative ones. Learners use ó ṣeé ṣe kí ("it is possible that") and bí a ṣe fẹ́ mọ̀ ("as far as we know") to present information cautiously: ó ṣeé ṣe kí iye owó náà yí padà ní àwọn oṣù tí ń bọ̀ ("it is possible that the amount may change in the coming months"). Hedging must not be omitted when the source itself is uncertain.
The reference-chain control developed in Chapters 2 and 3 continues here: when two reports are compared, each mention of "the first report," "the second report," or a named researcher must remain unambiguous from first mention to last, so the reader never confuses which source is being described.
Model Dialogue
Ipò: Adé àti Bọ́lá ń jíròrò àwọn ìjábọ̀ méjì tí wọ́n nílò láti fi wé ara wọn ṣáájú kí Adé tó kọ àlàyé rẹ̀ fún ìwé ìròyìn ọ́fíìsì.
Setting: Adé and Bọ́lá are discussing two reports they need to compare before Adé writes his explanation for the office newsletter.
Guided Practice
- Identify the sentence where Bọ́lá attributes a finding to the first report, and underline the attribution phrase.
- Find the sentence where Bọ́lá introduces a hedge, and underline the hedging phrase.
- Locate the sentence where Adé acknowledges agreement between the two reports while still planning to explain their difference, and underline the contrast connector.
- Write one sentence of your own using gẹ́gẹ́ bí to attribute an idea to a source.
Listening Practice
Ask an instructor, study partner, or qualified Yorùbá speaker to read the passage below aloud, or read it aloud yourself and then cover it before answering.
If no speaker is available, this is a Listening Script for Independent Use. Machine text-to-speech must be checked by a qualified Yorùbá speaker before use as a pronunciation model.
"Lẹ́yìn tí Adé àti Bọ́lá parí ìjíròrò wọn, Adé ṣàlàyé fún Ẹnjinia Kúnlé pé nígbà tí a bá ń fi ìjábọ̀ méjì wé ara wọn, ó ṣe pàtàkì láti sọ ohun tí ìjábọ̀ kọ̀ọ̀kan sọ ní kedere, kí a sì fi ìdí rẹ̀ múlẹ̀ pé irú ìsọfúnni wo ni ìjábọ̀ náà kọ́ wa. Ó fi kún un pé bí àwọn ìjábọ̀ méjèèjì kò bá fohùn ṣọ̀kan, ó ye kí a sọ ìyàtọ̀ náà jáde ní kedere, dípò kí a fi ojú kan yan orísun kan gbé ohun tí a fẹ́ gbà gbọ́ ka. Ẹnjinia Kúnlé fi kún ọ̀rọ̀ Adé pé nígbà tí àwọn orísun kò bá dá gbáradi lórí ọ̀rọ̀ kan, ó ṣe pàtàkì láti lo àwọn gbólóhùn bí i 'ó ṣeé ṣe kí' dípò kí a sọ ọ̀rọ̀ náà bí ẹni pé ó dájú pátápátá."
1. What does Adé say is important when comparing two reports?
2. What should a writer do if two reports disagree?
3. What does Ẹnjinia Kúnlé add about uncertain information?
Iṣẹ́ rẹ — Your task: Answer the three questions above in complete Yorùbá sentences, using Standard Written Yorùbá.
Speaking Practice
Tier 1 — Supported
Read the attribution and hedging phrases from the Grammar section aloud, then substitute a topic and source of your own.
Tier 2 — Guided
State one finding attributed to a source using gẹ́gẹ́ bí, and one hedge using ó ṣeé ṣe kí, describing a real or imagined topic.
Tier 3 — Independent
Explain aloud, in 60–90 seconds, a contrast between two sources or opinions on a topic of your choice, using attribution, contrast, reason, and at least one hedge.
Reading Practice
Àlàyé Orísun — A Source-Based Explanation
Gẹ́gẹ́ bí ìjábọ̀ àkọ́kọ́ ṣe sọ, omi mímọ́ kò tí ì tó fún gbogbo agbègbè wa, nítorí pé kànga tí ó wà kò tó iye tí a nílò. Ṣùgbọ́n ìjábọ̀ kejì, tí àwọn ọ̀mọ̀wé kan ṣe ní ọdún tí ó kọjá, fi hàn pé ipò náà ti túbọ̀ sunwọ̀n sí i láti ìgbà tí a ti kọ́ kànga tuntun mẹ́ta. Bí ó tilẹ̀ jẹ́ pé àwọn ìjábọ̀ méjèèjì gbà pé iṣẹ́ kan síbẹ̀ wà láti ṣe, wọn kò fohùn ṣọ̀kan lórí iye owó tí yóò nílò láti parí iṣẹ́ náà pátápátá. Bí a ṣe fẹ́ mọ̀, ìjábọ̀ àkọ́kọ́ ṣe iṣiro rẹ̀ láti ọdún mẹ́ta sẹ́yìn, nígbà tí ìjábọ̀ kejì lo àwọn ìsọfúnni tuntun jù. Nítorí náà, ó ṣeé ṣe kí iye owó gidi tí a nílò yàtọ̀ sí àwọn tí a mẹ́nu kàn nínú àwọn ìjábọ̀ méjèèjì.
1. What does the first report say, and why?
2. What does the second report show, and what changed?
3. On what point do the two reports disagree?
4. Identify one hedging phrase in the passage and explain why it is used.
Iṣẹ́ rẹ — Your task: Answer the four questions above in complete Yorùbá sentences.
Writing Workshop
Write a short source-based explanation (150–200 words) with full tone marks and dot-under letters throughout. Your explanation must attribute at least two claims to named sources using gẹ́gẹ́ bí, include at least one contrast between the sources using ṣùgbọ́n or bí ó tilẹ̀ jẹ́ pé, include at least one reason clause with nítorí pé, and include at least one hedge using ó ṣeé ṣe kí or bí a ṣe fẹ́ mọ̀.
Sample explanation shell — for reference only
Gẹ́gẹ́ bí [orísun kìíní] ṣe sọ, [àwárí kìíní], nítorí pé [ìdí]. Ṣùgbọ́n gẹ́gẹ́ bí [orísun kejì] ṣe fi hàn, [àwárí kejì].
According to [first source], [first finding], because [reason]. But according to [second source], [second finding].Bí ó tilẹ̀ jẹ́ pé àwọn orísun méjèèjì [ohun tí wọ́n fohùn ṣọ̀kan lé lórí], ó ṣeé ṣe kí [ohun tí a kò tí ì mọ̀ dájú].
Even though both sources [what they agree on], it is possible that [what remains uncertain].Include
- at least two attributed claims with gẹ́gẹ́ bí
- a contrast with ṣùgbọ́n or bí ó tilẹ̀ jẹ́ pé
- a reason clause with nítorí pé
- a hedge with ó ṣeé ṣe kí or bí a ṣe fẹ́ mọ̀
Avoid
- stating an uncertain source claim as flat fact
- losing track of which source said what
- omitting tone marks or dot-under letters
- Every vowel that should carry a high or low tone mark has one.
ẹ,ọ, andṣare distinguished frome,o, andsthroughout.- Each claim is clearly attributed to its source.
- At least one contrast and one hedge appear and are used accurately.
- No source's claim is presented as more certain than the source itself states.
Culture and Communication
In many Yorùbá-speaking academic and professional settings, presenting information with appropriate caution is generally viewed as a sign of careful thinking rather than weakness, and speakers commonly acknowledge points of shared agreement before raising a disagreement. This ordering, agreement before contrast, tends to keep academic and professional discussion collegial even when sources conflict.
Some universities and research institutions use additional specialized academic conventions, such as formal citation formats, beyond what a workplace newsletter explanation typically requires. These additional conventions remain recognition-only for now; Chapter 16 will return to research, sources, and synthesis in more depth.
Common Mistakes
Error: Reporting a tentative finding as certain fact, for example writing "Iye owó náà jẹ́ ọgọ́rùn-ún kan" when the source itself states this only as a possibility.
Correction: Preserve the source's own level of certainty by using a hedge such as ó ṣeé ṣe kí, as in "Ó ṣeé ṣe kí iye owó náà jẹ́ ọgọ́rùn-ún kan."
Error: Presenting two different reports' findings in a single sentence without attribution, so the reader cannot tell which claim came from which source.
Correction: Attribute each claim separately with gẹ́gẹ́ bí, and use a contrast connector such as ṣùgbọ́n to mark where the sources diverge, as in the model explanation above.
Chapter Summary
This chapter introduced source attribution and complement clauses for reporting source content, and developed contrast with ṣùgbọ́n and bí ó tilẹ̀ jẹ́ pé, reason clauses with nítorí pé applied to academic explanation, and hedging frames with ó ṣeé ṣe kí and bí a ṣe fẹ́ mọ̀, all inside the functional task of a source-based explanation. Reference-chain clarity, developed across Chapters 2 and 3, was extended to distinguishing multiple sources within a single text. Learners practiced listening to, speaking about, reading, and writing source-based explanations while maintaining full Standard Written Yorùbá production.
Chapter Review
Apá A — Ìṣàyẹ̀wò Gírámà (Grammar Check)
1. Write one sentence attributing a claim to a source using gẹ́gẹ́ bí.
2. Write one sentence contrasting two sources using ṣùgbọ́n or bí ó tilẹ̀ jẹ́ pé.
3. Write one hedge using ó ṣeé ṣe kí.
Apá B — Ìṣàyẹ̀wò Ara Ẹni (Self-Check)
1. Which part of source-based explanation feels most natural to you so far?
2. Which part — attribution, contrast, reason, or hedging — do you want to keep practicing?
Ìfojúsí ẹkọ̀ tẹ́lẹ̀ — Cumulative review check
Before moving to Chapter 5, confirm you can do the following:
- Attribute a claim to a named source with gẹ́gẹ́ bí.
- Report source content using a complement clause with pé.
- Mark contrast between sources with ṣùgbọ́n or bí ó tilẹ̀ jẹ́ pé.
- Give a reason for a claim using nítorí pé.
- Hedge uncertain information rather than stating it as fact.
- Maintain full tone marking and dot-under orthography throughout formal writing.
Practical Performance Task
Iṣẹ́ aṣeyọrí — Abala 4
Àlàyé Orísun — Source-Based Explanation
Produce a complete short source-based explanation, entirely in Standard Written Yorùbá, following the structure taught in this chapter.
Component 1 — Draft Explanation
- 150–200 words, comparing two sources on one topic, with attribution, contrast, reason, and hedging.
- Each source clearly identifiable throughout.
Component 2 — Revised Explanation
- Apply the Source-Based Explanation Editing Checkpoint and produce a corrected final version.
- Note, in one or two sentences, what you changed and why.
Component 3 — Spoken Explanation
- Explain your comparison aloud (60–90 seconds) to a partner, instructor, or recording.
Assessment note: This task provides evidence of attribution accuracy, contrast and reason control, hedging appropriateness, reference-chain clarity, and tone/orthography precision, drawing on consolidated Volume III systems plus this chapter's newly introduced structures.
Answer Key
Listening Practice Questions
- Adé says it is important to state each report's claim clearly and to establish what kind of information the report gives.
- If two reports disagree, the writer should state the difference clearly rather than choosing one source and presenting it as the only truth.
- Ẹnjinia Kúnlé adds that uncertain information should be expressed with phrases such as "ó ṣeé ṣe kí" rather than stated as completely certain.
Reading Practice Questions
- The first report says clean water is insufficient, because the existing wells do not meet the need.
- The second report shows the situation has improved since three new wells were built.
- The two reports disagree on how much money will be needed to finish the work.
- Sample: "Bí a ṣe fẹ́ mọ̀" is used because the actual cost is not yet certain, since the two reports used different information.
Guided Practice — Sample Responses
1. "Gẹ́gẹ́ bí ìjábọ̀ àkọ́kọ́ ṣe sọ" attributes the finding. 2. "Ó ṣeé ṣe kí àwọn ìsọfúnni tí wọ́n lò má tí ì ní gbogbo agbègbè náà nínú" is the hedge. 3. "Bí ó tilẹ̀ jẹ́ pé àwọn ìjábọ̀ méjèèjì gbà pé iṣẹ́ kan wà láti ṣe" is the contrast connector. 4. Sample: Gẹ́gẹ́ bí olùkọ́ wa ṣe sọ, ìdánwò yìí máa ṣòro díẹ̀ ju ti ọdún tí ó kọjá lọ.
Chapter Review — Apá A
1. Sample: Gẹ́gẹ́ bí ìwé agbéròyìnjáde yìí ṣe sọ, ìsẹ̀lẹ̀ náà ṣẹlẹ̀ ní òwúrọ̀. 2. Sample: Ìjábọ̀ àkọ́kọ́ gbà pé owó tó; ṣùgbọ́n ìjábọ̀ kejì kò fohùn ṣọ̀kan pẹ̀lú èyí. 3. Sample: Ó ṣeé ṣe kí àbájáde yìí yí padà ní ọdún tí ń bọ̀.
Chapter Review — Apá B
Self-check items have no single fixed answer. Confirm your responses against the cumulative review checklist above.
Independent Study Tools
Fún akẹ́kọ̀ọ́ tí ń kọ́ ẹ̀kọ́ fúnra rẹ̀ — For the independent learner
- Keep a small list of attribution, contrast, and hedging phrases you can reuse in future explanations.
- Practice writing one attributed claim and one hedge each day this week, on any topic that interests you.
- Ask a Yorùbá-speaking friend, tutor, or colleague to check whether your contrasts and hedges sound natural.
- Compare your explanation to the model explanation and note any structural differences.
Looking Ahead
Ohun tí o lè ṣe báyìí — What you can do now
You can now attribute claims to sources, report source content with complement clauses, contrast disagreeing sources, give reasons for claims, hedge uncertain information, and write a short source-based explanation in Standard Written Yorùbá.