SAT · IB · 내신 All-in-One

Daily English
Mastery Worksheet

📅 Grade 4 Level · Advanced
🎯 10 Questions · Self-Test
~25 min per session
📘 SAT + IB Aligned
High-Frequency SAT/IB Words
Examples 1–3
Quick Memory Key
Confused by ambiguous / ambivalent / ambiguous?
AMBI = both sides → ambiguous (2 meanings), ambivalent (2 feelings).
ELUDE vs ALLUDE: Elude = Escape, Allude = hInt.
AMBI = both -LOGY = study of DIS- = not/away BENE- = good MAL- = bad
📌 Example 1 · Context Clue Strategy
"The professor's lecture was so abstruse that even graduate students struggled to follow."

Clue: "even graduate students struggled" tells you abstruse = extremely difficult to understand
Root: Latin abstrusus (hidden away)
Trap: Don't confuse with "obtuse" (blunt, not sharp/not intelligent)
📌 Example 2 · Tone & Connotation
Both sentences describe a person who talks too much — but notice the difference:

(A) "She was loquacious, always ready with an anecdote or observation." → neutral/positive
(B) "She was garrulous, rambling on about trivial matters." → negative/annoying

IB/SAT Trap: Always check surrounding tone before selecting a vocabulary word.
📌 Example 3 · Commonly Confused Pairs
AFFECT (v.) = to influence → "The cold affected her performance."
EFFECT (n.) = result → "The effect of the cold was clear."
EFFECT (v., rare) = to bring about → "She effected a dramatic change."

Memory Key: Affect = Action (verb) · Effect = End result (noun)
Passage Comprehension & Analysis
Examples 4–6
🔍
Quick Memory Key · Main Idea Formula
SCOPE + POINT + PURPOSE
What is the topic? → What does the author say about it? → Why are they saying it?
Eliminate: too broad, too narrow, opposite, extreme.
SCOPE = what POINT = claim PURPOSE = why ELIMINATE extremes
📌 Example 4 · Author's Purpose & Tone
"While proponents of standardized testing argue that it provides an objective measure of academic achievement, critics contend that such assessments systematically disadvantage students from lower socioeconomic backgrounds, rendering the notion of a 'level playing field' largely illusory."

Q: The author's use of "largely illusory" suggests the author:
→ (A) supports standardized testing ✗
→ (B) questions its fairness ✓ — "illusory" = not real, and the qualifier "largely" shows the author is measured, not extreme

Key: Look for qualifiers (largely, often, rarely) — SAT/IB answers avoid absolutes.
📌 Example 5 · Evidence-Based Reasoning (SAT Style)
Passage: "Researchers found that students who read for pleasure performed significantly better on comprehension tasks. However, the study did not control for prior academic achievement."

Q: Which weakens the researchers' conclusion most?
→ The key phrase is "did not control for" → prior high achievers may both read more AND score better (confounding variable)
IB Paper 1 & SAT tip: "Correlation ≠ Causation" is the #1 logic trap in evidence questions.
📌 Example 6 · Dual Passage Comparison
Passage A (optimistic): "Technology has democratized education, granting access to knowledge previously reserved for the elite."
Passage B (cautionary): "The digital divide ensures that technological advances primarily benefit those already privileged."

How do the authors differ? → Both acknowledge technology's impact, but differ on who benefits.
Strategy: In dual passages, find AGREE point first, then find the KEY DISAGREEMENT.
Structure, Usage & Mechanics
Examples 7–8
⚙️
Quick Memory Key · Punctuation Power
FANBOYS = For And Nor But Or Yet So (coordinating conjunctions)
Semicolon = joins two complete sentences (= period but connected)
Colon = introduces / elaborates (the left side must be a complete sentence)
FANBOYS ; = .but connected : = introduces — = emphasis
📌 Example 7 · Subject–Verb Agreement Traps
Trap sentence: "The committee, along with several advisors, are reviewing the proposal."

Correct: "is" — Prepositional phrases like "along with" DO NOT change the subject. Subject = "committee" (singular).

Other traps:
• "Either...or" / "Neither...nor" → verb agrees with the closer subject
• "Each", "Every", "Anyone" → always singular
📌 Example 8 · Modifier Placement (Dangling Modifiers)
Wrong: "Running through the rain, the umbrella was forgotten."
→ The umbrella was running? ✗ (dangling modifier)

Correct: "Running through the rain, she forgot her umbrella."

Rule: The subject that follows a comma after an introductory phrase MUST be the one performing that action.
Test: Ask → WHO/WHAT is doing the action in the modifier?
Test-Specific Skills
Examples 9–10
🏆
Quick Memory Key · Answer Elimination
SAT/IB distractor types: EXTREME (always/never), OPPOSITE, HALF-RIGHT (correct fact, wrong application), OUT-OF-SCOPE.
Best strategy = eliminate 2 wrong answers first, then decide between 2 remaining.
EXTREME → wrong OPPOSITE → wrong HALF-RIGHT → trap OUT-OF-SCOPE → wrong
📌 Example 9 · IB Paper 1 — Stylistic Analysis
"The children's laughter echoed through the hollow, empty house."

Q: Identify and explain one stylistic technique.
Juxtaposition/Irony: The joyful "laughter" is placed against the "hollow, empty house," creating a sense of absence or loss.
Redundancy as effect: "hollow" and "empty" are near-synonyms → emphasizes desolation

IB Formula: Technique + Quotation + Effect on reader
📌 Example 10 · SAT Writing — Transitions
Sentence A: "The new drug showed promising results in trials."
Sentence B: "It was never approved for public use."

Best transition word: Nevertheless / However / Yet (contrast)

Transition categories to memorize:
Contrast: however, nevertheless, yet, conversely
Cause: therefore, consequently, thus, as a result
Addition: furthermore, moreover, in addition
Example: for instance, specifically, namely
0 / 10 answered Score: 0
Choose the Best Word
Q 01 · Vocabulary
The scientist's findings were initially dismissed as ______, but decades later they were confirmed by multiple independent studies.
📘 Explanation
Correct answer: B — spurious.
The key context is that the findings were "dismissed" but later "confirmed." This means people initially considered them false or invalid — which matches spurious (= false, not genuine).
Prescient (A) means "ahead of its time/predictive" — opposite logic here.
Laudable (C) means praiseworthy — the opposite direction.
Esoteric (D) means specialized/obscure — doesn't fit the "dismissed then confirmed" structure.
Q 02 · Vocabulary
As used in the sentence, which word most nearly means "guileless"?

"Her guileless manner made her an unexpectedly powerful negotiator — people underestimated her."
📘 Explanation
Correct answer: C — Innocent / Artless.
Guileless = without guile (= deception). Root: GUILE = cunning/deception + -LESS = without. So guileless = without cunning, i.e., artless, innocent, straightforward.
The sentence's irony ("unexpectedly powerful") relies on people seeing her as simple/naive — reinforcing C.
Common trap: Choosing A (cunning) — this is the OPPOSITE. The "-less" suffix is critical.
Q 03 · Vocabulary — Tone
Which pair of words would create the most contrasting tones if inserted in the blanks?

"The board described the CEO's management style as ______; employees described it as ______."
📘 Explanation
Correct answer: B — decisive / autocratic.
The sentence sets up a contrast between the board's perspective (positive/neutral) and employees' perspective (negative).
Decisive = positive spin (acts quickly and firmly)
Autocratic = negative spin (bossy, no input from others)
Same behavior, opposite evaluations — maximum tonal contrast.
Options A, C, D are near-synonyms — no real contrast.
Passage Analysis
Q 04 · Reading Comprehension
1Urban green spaces have long been associated with improved mental health outcomes. A 2022 meta-analysis of 143 studies found a consistent correlation between proximity to parks and reduced rates of anxiety. 3However, the causal mechanism remains unclear: do parks reduce stress, or do mentally healthier people choose to live near parks? 5Policymakers eager to cite this research should proceed with caution.
The author's primary concern in lines 3–5 is to:
📘 Explanation
Correct answer: C.
The author acknowledges the correlation (line 1–2) but then raises the causation problem (line 3–4) and warns policymakers (line 5). This is a classic correlation ≠ causation structure.
• A is too extreme — the author doesn't deny benefits
• B is what lines 1–2 do (summarize), not lines 3–5
• D is too strong — "caution" ≠ "discourage"
Q 05 · Reading — Vocabulary in Context
"The novelist's prose was deceptively pellucid: on a first reading, one might mistake its clarity for simplicity, but careful analysis revealed layers of structural and thematic complexity that rewarded patient study."
As used in the passage, "pellucid" most nearly means:
📘 Explanation
Correct answer: B — transparently clear.
Pellucid = allowing light through; clear. Root: Latin pellucidus = transparent (related to "translucent").
The context clue is "one might mistake its clarity for simplicity" — this tells us pellucid relates to clarity (= clear, easy to read). The deceptively at the start creates the irony — it looks simple but isn't.
Trap: C is what the novel actually IS (complex), but pellucid describes what it appears to be on first reading.
Q 06 · Reading — Inference & Evidence
"Countries with the highest rates of social trust — defined as confidence in strangers and institutions — consistently report the highest levels of life satisfaction. Denmark, Finland, and Norway rank near the top of both indices. Critics note, however, that these nations are also among the world's most economically equal."
Which conclusion is best supported by this passage?
📘 Explanation
Correct answer: C.
The passage presents a correlation (trust ↔ satisfaction) but introduces a confounding variable: economic equality. This challenges simple causation — suggesting other factors matter.
• A is extreme ("sole determinant" — passage doesn't say this)
• B states causation ("causes") which goes beyond what the passage says
• D is an opinion about governance — completely out of scope
Rule: SAT/IB reading answers should be "modest" — avoid extremes, stick to what the text actually supports.
Usage, Style & Mechanics
Q 07 · Grammar — Punctuation
Which version of the sentence uses punctuation correctly?
📘 Explanation
Correct answer: C.
"However" is a conjunctive adverb, not a coordinating conjunction. It cannot join two independent clauses with only a comma (= comma splice error in A).
Semicolon + however + comma is the correct formula: [complete sentence]; however, [complete sentence].
• A = comma splice (two full sentences joined by only a comma)
• B = run-on sentence
• D = colon is wrong here (colon introduces/elaborates, doesn't contrast)
Q 08 · Grammar — Sentence Structure
Select the version that eliminates the error in the original sentence:

Original: "Having studied abroad for a year, the cultural differences were eye-opening for Maria."
📘 Explanation
Correct answer: B.
The original has a dangling modifier: "Having studied abroad" must be performed by the subject that follows the comma. In the original, "the cultural differences" follows — but differences can't study abroad. Only B correctly places Maria as the subject right after the comma.
• A still has a dangling modifier ("the experience" didn't study abroad)
• C restructures the sentence but changes the participial phrase — loses the specific structure tested
• D is still dangling ("the cultural differences" can't study abroad)
Test-Specific Application
Q 09 · IB / SAT — Rhetorical Analysis
"We stand at a crossroads. Down one path lies comfort, familiarity, the soft glow of the known. Down the other — uncertainty, struggle, and the terrifying freedom of possibility. Only one of these paths leads anywhere worth going."
The author primarily uses which technique, and to what effect?
📘 Explanation
Correct answer: C.
Extended metaphor: the "crossroads" / "two paths" imagery runs throughout the passage (classic life-as-journey metaphor).
Parallel structure: "Down one path... Down the other..." creates a balanced, rhythmic contrast that emphasizes the binary choice.
The effect is persuasion — the author implies one path is clearly superior ("Only one leads anywhere worth going").
IB tip: Always identify technique + effect together. Partial credit answers identify technique but give vague effects like "makes it interesting." Be specific: persuades, emphasizes, creates tension, etc.
Q 10 · SAT Writing — Transitions & Logic
Which transition word or phrase best connects the two sentences?

"Early exposure to multiple languages has been shown to strengthen executive function in children. ______, bilingual adults have demonstrated greater cognitive resilience in aging populations."
📘 Explanation
Correct answer: C — Furthermore.
Both sentences support the same argument (bilingualism = cognitive benefits). The second sentence adds another piece of evidence — it doesn't contrast or give a result.
Nevertheless (A) = contrast → wrong (both sentences agree)
In contrast (B) = contrast → wrong
As a result (D) = cause/effect → wrong (second sentence is additional evidence, not a consequence of the first)
SAT tip: Read the logical relationship FIRST, then match to transition category.
Your Score