5.4 Types of Passage, Author's Purpose & Tone
Key Takeaways
- The NTS curriculum names seven passage types under C6: narrative, descriptive, expository, scientific, entertaining, didactic and rhetorical.
- Passage type is diagnosed from verb tense, person, and organising pattern rather than from subject matter.
- A didactic passage teaches a lesson or moral; a rhetorical passage argues and seeks to persuade.
- Identifying the type predicts where the main idea will sit and what kind of question will follow.
- Tone words in options are usually eliminated by extremity: contemptuous, euphoric and belligerent almost never describe NTS passages.
Types of Passage, Author's Purpose & Tone
The NTS curriculum's final comprehension item, C6: Type of Passage, is unusually specific. It names all seven categories the exam draws from: Narrative, Descriptive, Expository, Scientific, Entertaining, Didactic, Rhetorical — 3% of the verbal segment. Small in itself, but the payoff is larger than the allocation suggests: naming the type in the first ten seconds tells you where to look for the main idea and what the questions will ask.
The Seven Types and Their Diagnostic Markers
| Type | Purpose | Tense / person | Organising pattern | Typical marker |
|---|---|---|---|---|
| Narrative | Tell what happened | Past tense, often first person | Chronological | Time markers: then, afterwards, the next morning |
| Descriptive | Create a sensory picture | Present or past, static | Spatial | Adjective-heavy, little event sequence |
| Expository | Explain or inform | Present tense, third person | Logical: definition, classification, cause-effect | consists of, is defined as, there are three types |
| Scientific | Report method and findings | Present or past, passive, impersonal | Hypothesis, method, result, conclusion | Passive voice, data, hedged claims |
| Entertaining | Amuse the reader | Any | Anecdote, twist | Humour, irony, exaggeration, surprise ending |
| Didactic | Teach a lesson or moral | Often past narrative framing a precept | Story then moral, or precept then illustration | teaches us, the lesson is, one should |
| Rhetorical | Persuade to a position | Present, often first or second person | Claim, evidence, counter-argument, call to action | must, should, surely, it is clear that, rhetorical questions |
The Three Pairs That Get Confused
Expository vs Scientific. Both inform. Expository explains an existing body of knowledge to a general reader (The GAT General consists of three segments…). Scientific reports investigation, carries method and data, and hedges its claims (Samples were collected over eighteen months; results suggest…). Passive voice and hedging are the giveaways.
Didactic vs Rhetorical. Both want to change you. Didactic instructs — it assumes the value is agreed and teaches you to live by it, often through a story with a moral. Rhetorical argues — it assumes disagreement and marshals evidence against an opposing view. If the passage acknowledges a counter-position, it is rhetorical.
Narrative vs Descriptive. Narrative has a sequence of events; descriptive has none. If you can list what happened first, second, third, it is narrative. If the passage would read the same with its sentences reordered, it is descriptive.
Author's Purpose
Purpose questions ask why the passage was written, and the answer is normally a verb from a short standard list:
| Verb | Fits a passage that … |
|---|---|
| to inform / explain / describe | presents facts neutrally |
| to argue / persuade / advocate | takes a side and defends it |
| to criticise / refute / warn | attacks a position or practice |
| to compare / contrast | sets two things side by side |
| to illustrate / exemplify | supports a claim with a case |
| to entertain / amuse | uses humour or narrative for pleasure |
Method: ask what the author did, not what the passage was about. A passage about groundwater depletion could inform, warn, or advocate for regulation — subject matter alone does not settle it. Look at the final paragraph: authors usually reveal purpose in how they close.
Tone
Tone is the author's attitude to the subject, carried by word choice.
| Tone family | Words used in options |
|---|---|
| Neutral | objective, informative, factual, expository, impartial |
| Positive | approving, admiring, optimistic, appreciative, sympathetic |
| Negative | critical, sceptical, disapproving, pessimistic, dismissive |
| Cautious | tentative, measured, qualified, circumspect |
| Emotional | nostalgic, indignant, reverent, sombre |
The Extremity Filter
Almost all NTS passages are drawn from textbooks, editorials, and reports — measured registers. Options offering contemptuous, euphoric, belligerent, vitriolic, apathetic, flippant are nearly always wrong. When two options survive, the more moderate is usually the answer: critical over contemptuous, approving over reverent.
Watch the qualifiers, because they carry the tone: somewhat, arguably, appears to, may signal a cautious author; undeniably, must, surely, no reasonable person signal an assertive one.
Reading Type Into Strategy
Once you name the type, you know where to look:
- Expository or scientific → main idea is usually in the first two sentences; expect detail and inference questions. Skim the structure, then return to the text for each question.
- Rhetorical → main idea is the author's claim, often after a however pivot; expect purpose, tone, assumption and weaken questions.
- Narrative or didactic → main idea is usually the moral in the closing lines; expect inference-about-character and lesson questions.
- Descriptive → expect vocabulary-in-context and detail questions rather than argument questions.
Ten-second diagnosis: read the first sentence and the last sentence only. Events plus a moral means didactic. A claim plus a call to act means rhetorical. A definition plus a summary means expository. Method plus findings means scientific. That single habit reshapes how you attack the remaining questions and saves more time than reading faster ever will.
A passage recounts a farmer who ignored repeated warnings about soil salinity, lost his crop, and closes: "Thus the man who scorns advice pays for it twice." Which type is it?
Which feature most reliably separates a scientific passage from an expository one?
A passage argues that provincial governments should meter agricultural tube wells, acknowledges farmers' objections, answers them, and ends by urging legislation. What is the author's primary purpose?
A passage on groundwater depletion uses phrases such as "the data appear to suggest" and "further study may be warranted." Which tone word best fits?