Prefixes: un-, dis-, mis-, re-, pre-, in-, im-, il-, ir-
Tests: 5 of 12 right · Exam: 2 of 4 right · Kind: ★ · Understood: 7 of 16 · Run: 2026-10-18, commit f3c23ea72
Lesson 12 of the english course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.
Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.
Test 1 · ★ · wrong ✗
«I'm fixin' to misdo my homework cos I messed up». What should he say, and why?
- 1. «Predo», because pre- means again — ← Mova's choice · no support
- 2. «Misdo», because mis- means again — no support
- 3. «Redo», because re- means again — ✓ the right answer · no support
- 4. «Undo», because un- means again — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 2 · ★ · wrong ✗
«dis + appear, so double s, dissappear, sorted». Where's the slip?
- 1. It should be «dissapear», two s's — ← Mova's choice · no support
- 2. «Appear» has no s, so it's «disappear» — ✓ the right answer · no support
- 3. Nothing, «dissappear» is right — no support
- 4. It should be «disapear» — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 3 · ★ · wrong ✗
«unlegal, cos un- means not innit». What is the real word?
- 1. dislegal — ← Mova's choice · no support
- 2. inlegal — no support
- 3. imlegal — no support
- 4. illegal — ✓ the right answer · no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 4 · ★ · wrong ✗
What would happen if we wrote «misspell» with one s?
- 1. Nothing, «mispell» is also correct — no support
- 2. We'd misspell «misspell», because both s's belong — ✓ the right answer · no support
- 3. It would mean «not spell» — ← Mova's choice · score 2
- 4. It would mean «spell again» — score 2
Why: It took the question to ask what happens next. It chose option 3 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 12, line 6: «A prefix is added to the start of a word and changes its meaning.», reached through what followed the sentence the question matched. What matched: the same action «mean» (+4). Against it: a different doer (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 5 · ★ · right ✓
«my cousin in Delhi said they'll prepone the test, he's made that up». Is he?
- 1. Yes, «prepone» is not a word anywhere — no support
- 2. No, it means «cancel», like «call off» — score 5
- 3. Yes, he means «postpone» — no support
- 4. No, it is correct Indian English for «bring forward» — ← Mova's choice · ✓ the right answer · score 6
Why: It took the question to ask which statement is true. It chose option 4 with score 6, against 5 for the next best. Its support: lesson 12, line 5: «Prefixes let you guess new words. Aryan in Delhi says the teacher will «prepone» the test: pre- (before) is the opposite of post- (after), so prepone means bri…», reached through the same lesson line as the sentence the question matched. What matched: the same action «bring forward» (+4); the same property (+2). · the question and its options parsed, with trees and pragmatics
Test 6 · ★ · right ✓
«dissed me in the playground, so dis- is just slang». What's true?
- 1. Dis- is a real prefix; the slang «diss» comes from «disrespect» — ← Mova's choice · ✓ the right answer · score 8
- 2. Dis- is only slang and never used in real words — no support
- 3. Dis- means again, like re- — score 4
- 4. Dis- came from text messages, so it isn't real — no support
Why: It took the question to ask which statement is true. It chose option 1 with score 8, against 4 for the next best. Its support: lesson 12, line 13: «dis- means not or the opposite: disagree, dislike, disrespect; the slang «diss» comes from «disrespect».», reached through the same lesson line as the sentence the question matched. What matched: the same action «come» (+4); the same place «disrespect» (+4). · the question and its options parsed, with trees and pragmatics
Test 7 · ★ · right ✓
A cartoon robot says «I am unpossible to beat!». What should it say?
- 1. impossible — ← Mova's choice · ✓ the right answer · no support
- 2. dispossible — no support
- 3. unpossable — no support
- 4. inpossible — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 8 · ★ · wrong ✗
«bicycle's got two wheels, so a tricycle must have... four?» What is right?
- 1. Two, like a bicycle — ← Mova's choice · no support
- 2. One, because tri- means only one — no support
- 3. Four, because tri- means twice two — no support
- 4. Three, because tri- means three — ✓ the right answer · no support
Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 9 · ★ · right ✓
Gran: «don't be disrespectful, love». What is the root word, and what does the prefix do?
- 1. respect; dis- means again — no support
- 2. spectful; disre- means not — no support
- 3. disrespect; -ful means not — no support
- 4. respectful; dis- makes the opposite — ← Mova's choice · ✓ the right answer · score 6
Why: It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 10, line 9: «Many ei words make the /ay/ sound: eight, weigh, neighbour; the rhyme does not cover them.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «many ei words» (+3); the same action «make» (+2); a different thing acted on (counts against) (+1). · the question and its options parsed, with trees and pragmatics
Test 10 · ★ · wrong ✗
★★★ Which word has a double letter ONLY because a prefix meets the root?
- 1. little — ← Mova's choice · no support
- 2. unnatural — ✓ the right answer · no support
- 3. rabbit — no support
- 4. slippery — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 11 · ★ · wrong ✗
★★★ «Responsible», «logical», «mature», «correct». Which list gives their «not» words correctly?
- 1. irresponsible, illogical, inmature, uncorrect — ← Mova's choice · no support
- 2. unresponsible, unlogical, unmature, uncorrect — no support
- 3. irresponsible, illogical, immature, incorrect — ✓ the right answer · no support
- 4. inresponsible, inlogical, inmature, incorrect — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 12 · ★ · right ✓
★★★ «Subheading» means a heading under the main one. What would «sub-zero» most likely mean?
- 1. Below zero — ← Mova's choice · ✓ the right answer · no support
- 2. Exactly zero — no support
- 3. A little above zero — no support
- 4. Zero, again and again — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · right ✓
Select the response consistent with the established facts concerning the effect of a prefix upon the spelling of a root word.
- 1. The spelling of the root word remains unaltered — ← Mova's choice · ✓ the right answer · score 4
- 2. The final letter of the prefix is invariably doubled — no support
- 3. The first letter of the root word is invariably omitted — score 2
- 4. The spelling of the root word is determined anew in each case — score 4
Why: It took the question to ask which statement is true. It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 1, line 5: «People learn and speak differently and are still right. Mum in London and Mom in Texas spell that word their own country's way; a girl who speaks Arabic at hom…», reached through the remembered sentence the question matched. What matched: the same action «spell» (+2); the same thing acted on «word» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · right ✓
Identify the principal reason for which the word «illegal» contains a double l.
- 1. The double l is an irregularity for which no explanation has been advanced by grammarians — no support
- 2. The letter l is doubled in all words of legal significance — score 4
- 3. The word was borrowed from French with its double l unchanged — score 2
- 4. The prefix il- precedes a root word commencing with the letter l — ← Mova's choice · ✓ the right answer · score 5
Why: It took the question to ask which statement is true. It chose option 4 with score 5, against 4 for the next best. Its support: lesson 12, line 9: «im- is used before many words starting with m or p: impossible, immature, impatient.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «many words» (+3); the same action «start» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
Which of the following statements most accurately characterises the prefix re-?
- 1. It signifies negation, as in «unhappy» and «unkind» — ← Mova's choice · score 9
- 2. It signifies repetition, as in «redo» and «rewrite» — ✓ the right answer · score 9
- 3. It signifies error, as in «misread» and «misspell» — score 9
- 4. It signifies anteriority, as in «preview» — score 9
Why: It took the question to ask who or what does it. It chose option 1 with score 9, tied with another option at 9 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 12, line 1: «A prefix is a few letters added to the front of a word that change its meaning: happy, unhappy; do, redo; view, preview. The best news for spellers: a prefix n…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «prefix» (+3); the same action «mean» (+2). The right option, 2, scored 9. · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · wrong ✗
It is given that the word «prepone» is employed by a teacher in Delhi. Ascertain its meaning.
- 1. To repeat the examination upon a subsequent occasion — ← Mova's choice · no support
- 2. To bring forward to an earlier time — ✓ the right answer · no support
- 3. To defer to a later time — no support
- 4. To cancel without notice — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/english/12-prefixes-un-dis-mis-re-pre-in-im-il-ir/