10.2 Proofreading & Language Conventions

Key Takeaways

  • ICAS proofreading items ask you to select the correctly written sentence or the best fix among options that plant agreement, tense, punctuation, spelling, plural, and homophone errors.
  • Use multi-error elimination: scan each option for one clear fault, strike it, and only then compare remaining candidates for subtle issues.
  • Agreement and tense faults often hide behind intervening phrases; find the true subject and the time frame before you accept a verb form.
  • Homophones and irregular plurals are high-frequency traps because they sound right when read aloud but fail conventional spelling.
  • Conventional correctness means the sentence follows standard written English for school assessment — not slangy speech, and not "sounds fancy."
Last updated: July 2026

10.2 Proofreading & Language Conventions

The final Syntax skill set on ICAS English is proofreading under pressure: you are shown several versions of a sentence (or a short stretch of writing) and must choose the one that is conventionally correct. These items pull together everything from Chapters 8–10 — agreement, tense, pronouns, punctuation, modality, modifiers — plus spelling, plurals, and homophones. You are not rewriting creatively; you are applying standard written English the way school assessments mark it.

Quick Answer: Read every option as a fault hunt. Kill options with clear agreement, tense, punctuation, spelling, plural, or homophone errors. When two survivors remain, re-check subject–verb match, time consistency, and whether each word is the right homophone for the meaning.

What "select the correctly written sentence" really tests

Typical stem shapes (paraphrased, not live ICAS items):

  • Which sentence is correctly punctuated / spelled / written?
  • Which is the best way to write the underlined words?
  • Which option has no errors?

Wrong options are engineered. They rarely contain only one huge howler; they mix a tempting almost-right form with one planted fault. Your job is elimination, not inspiration.

Error families to scan every time

Error familyWhat to checkOriginal wrong → right
Subject–verb agreementTrue subject number, not the nearest nounThe box of pencils are full.is full.
Verb tense / consistencyTime frame of the whole sentenceYesterday she walks home.walked
Pronoun agreement / referenceNumber and clear antecedentEach student brought their pencil (debated/informal) vs clear his or her / plural rewrite Students brought their pencils.
PunctuationCommas, apostrophes, sentence boundariesIts time to go.It's time to go.
SpellingConventional school spellingrecievereceive
Plurals / irregular plurals-s/-es vs special formschildschildren; sheepssheep
HomophonesSound-alikes with different spelling/meaningThere going too the park.They're going to the park.
Modifier / clarity (from 10.1)Attachment and forceDangling openers, only/almost in the wrong slot

You will not need every family on every item — but a full first pass across families stops you from crowning an option that fixed the comma yet kept their for there.

Multi-error elimination strategy

Use a fixed order so you do not second-guess under time pressure:

  1. Whole-sentence sense: Does any option fail to be a complete, sensible sentence?
  2. Verb spine: Find subject + main verb. Check agreement and tense.
  3. Boundary marks: Apostrophes (possession vs contraction), commas that join or split clauses illegally, missing end punctuation if shown.
  4. Word-level traps: Homophones, irregular plurals, doubled letters, ie/ei patterns, your/you're, its/it's, affect/effect where relevant.
  5. Final polish: Misplaced modifiers, double negatives, non-standard verb forms (brang, should of).

Worked mini-set (original):

Stem idea: choose the correctly written sentence.

OptionFault foundKeep?
The team of volunteers were late for there shift.team (singular unit here) wants was; there should be theirNo
The team of volunteers was late for their shift.Agreement and homophone both cleanYes (candidate)
The team of volunteers was late for they're shift.they're = they are — wrongNo
The team of volunteers were late for their shift's.Agreement shaky; shift's wrongly possessiveNo

Only one option survives both agreement and homophone checks. That is the pattern ICAS rewards.

Agreement and tense under interference

Intervening phrases are the classic agreement trap: The cost of the tickets is high (not are, even though tickets is plural and nearer the verb). Likewise There are three maps on the table — the true subject follows there.

Tense traps include:

  • Unmotivated shifts: She opened the door and sees the parcel.saw
  • Wrong participle after perfect: has wenthas gone
  • Conditional mismatch: If it rains, we would cancel (mixed) vs matched If it rains, we will cancel / If it rained, we would cancel

When options differ only by a verb form, restate the time of the event in your own words before choosing.

Punctuation that proofreading items love

You already met full punctuation systems in Chapter 9. For proofreading, prioritise high-frequency failures:

IssueFaulty originalConventional fix
Missing possessive apostrophethe girls bag (one girl)the girl's bag
Plural vs possessive confusionthe girl's are readythe girls are ready
Contraction apostrophedont waitdon't wait
its vs it'sThe dog wagged it's tail.…its tail.
Comma spliceThe bell rang, everyone stood.…rang, and everyone… / …rang; everyone… / two sentences
Fragment offered as full sentenceBecause the path flooded.Attach to a main clause

If two options both place commas differently, ask whether each clause can stand alone and whether a splice or a fragment was created.

Spelling, plurals, and irregular plurals

Proofreading is where memory forms matter. Sounding right is not enough.

Plural patterns (quick table)

PatternSingular → pluralNotes
Add -sbook → booksDefault
Add -esbox → boxes; bus → busess/ss/sh/ch/x/z endings
Consonant + y → iescity → citieskey → keys (vowel + y keeps -s)
f/fe → ves (many)leaf → leaves; knife → knivesExceptions: roof → roofs
Irregularchild → children; mouse → mice; tooth → teethMemorise high-frequency set
Same formsheep → sheep; deer → deerDo not add -s for standard plural
Foreign/learned (upper)crisis → crises; criterion → criteriaAppear more in secondary papers

Original fault lines: mouses, childs, sheeps, citys, knifes — all common wrong options.

Spelling hotspots

  • Double consonants: running, swimming, occurred
  • ie/ei: believe, receive (learn high-frequency words rather than relying only on the rhyme)
  • Silent letters: knowledge, island, Wednesday
  • -able/-ible and -ance/-ence pairs that options swap

When unsure, prefer the option that is consistent with other clean grammar — wrong options often stack a rare spelling with a second error so elimination still works.

Homophones in context

Homophones are words that sound the same (or nearly so) but differ in spelling and meaning. ICAS loves them because oral rehearsal does not catch them.

SetMeanings (short)Correct in context (original)
there / their / they'replace / possession / they areThey're packing their bags over there.
your / you'repossession / you areYou're sure your pass is signed?
its / it'spossession / it is (or it has)It's clear the robot lost its wheel.
to / too / twodirection/infinitive / also-or-excess / numberTwo runners were too tired to finish.
hear / herelisten / placeWait here so you can hear the bell.
weather / whetherclimate / ifWhether we start depends on the weather.
affect / effectverb influence / noun result (usual school pair)Rain may affect the match; the effect is a delay.
principal / principlehead person or main / ruleThe principal explained the safety principle.
practice / practise(varies by variety; know the form your paper's conventions use)Follow the consistent spelling in the options' correct model

Context test: Replace the homophone with a longer phrase. they'rethey are; it'sit is. If the expansion fails, the spelling is wrong.

Integrated multi-error options (original practice bank)

Study how faults stack — real items feel like this:

Set A — pick the correct sentence

  1. Every one of the runners have finished there warm-up.
  2. Every one of the runners has finished their warm-up.
  3. Every one of the runners has finished there warm-up.
  4. Every one of the runners have finished their warm-up.

Elimination: Every one is singular → has, not have (drops 1 and 4). there (place) is wrong for possession → need their (drops 3). Survivor: sentence 2.

Set B — punctuation + apostrophe

  1. The coaches whistle blew, the race began.
  2. The coach's whistle blew, and the race began.
  3. The coaches' whistle blew and the race began? (if only one coach intended — wrong plural possessive; also odd ?)
  4. The coach's whistle blew the race began. (missing link — run-on/splice risk)

Best conventional control: sentence 2 (singular coach possessive + coordinating link).

Set C — tense + irregular form

  1. By noon the crew had went home.
  2. By noon the crew had gone home.
  3. By noon the crew have gone home. (present perfect clashes with By noon completed framing in many school keys when paired with past narrative — prefer past perfect had gone)
  4. By noon the crew gone home. (missing auxiliary)

Standard school key: sentence 2.

Conventional correctness mindset

"Sounds fine when I say it" is not the standard. Speech allows should of, comma-free run-ons, and there's + plural. Written ICAS English expects:

  • should have (not should of)
  • clear sentence boundaries
  • standard past participles (written, done, begun, spoken)
  • apostrophes only where possession or contraction is real

Upper-paper note: Options may look almost identical, differing by one letter (practise/practice, criteria/criterion, fewer/less). Slow down for single-character edits after the big grammar scan.

Exam routine (30–45 seconds per proofreading item)

  1. Cover the options mentally and predict the intended clean sentence.
  2. Uncover and strike any option with an obvious spine error (verb, fragment, splice).
  3. Among survivors, hunt homophones and apostrophes.
  4. Confirm one fully clean option; if two still look good, re-check intervening-phrase agreement and irregular verbs.
  5. Do not pick the longest or most formal option by default — formality is not correctness.

Master this section and you convert "I can speak English" into "I can mark English the way the paper marks it" — the exact habit Syntax proofreading rewards.

Test Your Knowledge

Which sentence is written correctly for standard school conventions?

A
B
C
D
Test Your Knowledge

A student is proofreading options that differ by verb form and spelling. Which choice correctly completes the sentence "By the time the bell rang, Maya had ___ her reflection and corrected two ____."?

A
B
C
D