8.1 Parts of Speech & Word Classes

Syntax is one of the four equal ICAS English strands. Grammar foundations sit at the base of that strand: before you can fix tense, join clauses or track pronouns, you must recognise word classes (also called parts of speech). ICAS does not usually ask for dictionary labels in isolation. It asks you to identify a class in context, choose the form that fits a sentence, or explain why one option breaks agreement or meaning. Every sentence and table in this section is original practice material, not from released ICAS papers.

Why Word Class Matters on ICAS

Knowing that run can be a noun or a verb is not enough. You need to see what run is doing here:

• After a long run, the team rested. → noun (a thing / event)
• They run every morning before school. → verb (action)

Word class controls three exam-critical skills:

1. Agreement — subjects (nouns/pronouns) must match verbs in number and person.
2. Modification — adjectives modify nouns; adverbs modify verbs, adjectives or clauses. Mixing them creates wrong options.
3. Meaning — swapping class can change who does what: The quiet student answers carefully is different from Quietly, the student answers.

ICAS tip: If the stem says "Which word is used as a verb in this sentence?" ignore how the word is often used elsewhere. Test only this sentence.

The Core Word Classes at a Glance

Some frameworks also list interjections (oh, wow). ICAS Syntax focus is usually the eight classes above plus how they build sentences.

Nouns: Concrete, Abstract and Roles

Nouns name. They can be concrete (notebook), abstract (freedom), proper (Tasmania) or common (island). On ICAS, you rarely need those labels unless the stem asks. You do need to spot nouns as subjects and objects:

• Subject: The lantern flickered.
• Object: She lit the lantern.
• After a preposition: smoke from the lantern

Collective nouns (team, class, flock) can be treated as singular or plural depending on style and meaning; for school English, watch the verb and any nearby pronoun for consistency: The team is ready (unit) vs The team are arguing among themselves (individuals) — pick the option that stays consistent within the sentence.

Nouns that look like verbs

• Her jump surprised everyone. (noun)
• They jump the rope in pairs. (verb)
• A sudden jump in price followed the news. (noun)

If a word has the/a or an adjective before it and no tense ending doing the action of the clause, lean noun.

Verbs: The Engine of the Clause

Verbs carry tense and agreement. A complete independent clause needs a finite verb (a verb form marked for tense/person):

• Complete: The bus arrives at noon.
• Incomplete fragment: The bus arriving at noon. (arriving alone does not finish the clause)

Auxiliary (helping) verbs join main verbs: is walking, have seen, will try, can swim. On classification items, both auxiliaries and main verbs are still verbs.

Linking verbs (is, seem, become, feel in some uses) connect subject to a description: The soup tastes salty. Here salty is an adjective, not an adverb — a classic trap.

Adjectives and Adverbs: Who Modifies What

Original contrast

• She gave a quick reply. → adjective (modifies reply)
• She replied quickly. → adverb (modifies replied)
• That is a really quick reply. → adverb really modifies adjective quick

Many adverbs end in -ly, but not all (fast, well, often, never, here). Some adjectives end in -ly too (friendly, lovely). Class follows function, not spelling.

Pronouns and Determiners

Pronouns replace noun phrases so writing is not repetitive: Maya found Maya's bag → Maya found her bag. Types you will meet:

• Personal: I, you, he, she, it, we, they (+ object forms me, him, them)
• Possessive pronouns: mine, yours, theirs (stand alone)
• Possessive determiners: my, your, their (come before nouns — often grouped with determiners)
• Reflexive: myself, themselves
• Relative: who, which, that, whose (also open relative clauses — next section)
• Demonstrative: this, that, these, those (can be pronouns or determiners)
• Indefinite: someone, anything, none, both

Determiners sit with nouns: the gate, those maps, every student, no excuse, three attempts. If the word only points to or limits a following noun, treat it as a determiner (or determiner use of a demonstrative/possessive).

Original mini-passage

Those sketches on the wall belong to Amira. She drew them last winter, and every visitor stops to look.

• Those — determiner (marks sketches)
• She — pronoun (stands for Amira)
• them — pronoun (stands for the sketches)
• every — determiner (marks visitor)

Prepositions and Conjunctions

Prepositions introduce prepositional phrases: beneath the stairs, during the storm, without help, according to the guide. The phrase usually acts like an adjective or adverb: the box under the bench (describes box); waited under the bench (modifies waited).

Conjunctions join:

Do not confuse prepositions with conjunctions that look related: after the rain (preposition + noun) vs after the rain stopped (subordinating conjunction + clause with a verb).

Context Changes Class: One Word, Three Jobs

Study this original set:

1. Please light the candle. → verb
2. A soft light filled the room. → noun
3. She wore a light jacket. → adjective

Another set:

1. They book tickets online. → verb
2. The book on the shelf is mine. → noun

ICAS-style move: When options list the same word with different class labels, rebuild the sentence job: Is it naming? Doing? Describing a noun? Describing an action?

How ICAS Usually Tests Word Class

Typical stem patterns (original wording, ICAS-like angle):

• "In this sentence, which word is an adjective?"
• "Which option uses fast as an adverb?"
• "Which word in the sentence is a preposition?"
• "Which sentence uses before as a conjunction, not a preposition?"
• "Which underlined word is a determiner?"

Strategy

1. Read the whole sentence once for meaning.
2. Find the finite verb and the subject noun/pronoun.
3. For the target word, ask: What does it attach to? What question does it answer?
4. Eliminate options that name a true fact about the story but not the grammar job.
5. If two classes seem possible, re-check whether a full clause follows (conjunction) or only a noun phrase (preposition).

Worked Identification (Original Passage)

Although the narrow bridge creaked loudly, the hikers crossed it with careful steps.

Practise this table method until it is automatic. ICAS speed comes from habit, not from memorising word lists without sentences.

Common Traps

• Label from memory: well is often an adverb (sings well) but can be an adjective (She is well).
• Confusing possessives: their (determiner) vs theirs (pronoun) vs there (adverb of place) vs they're (pronoun + verb).
• Calling every -ing word a verb: Swimming can be a noun (Swimming is fun) or part of a verb phrase (is swimming).
• Adverb vs adjective after linking verbs: He feels bad (adjective describing him) vs He feels badly (usually wrong unless you mean poor sense of touch).

Master word class in context and the rest of Syntax — clauses, tense and agreement — becomes much easier to control.