ACT English: Recognize Idiomatic Expressions and Correct Awkward Phrasing

An idiom is a phrase that follows a conventional pattern. Example: "Concerned with" not "concerned about" (for certain uses). "Different from" not "different than." "In accordance with" not "in accordance to." Native English speakers recognize these patterns by ear; non-native speakers must learn them explicitly. ACT English tests idioms by presenting awkward alternative phrasings that violate English conventions. The correct answer will match how native English speakers phrase ideas.

Common ACT idioms: "agree with" (person), "agree to" (proposal). "Capable of" (not "capable to"). "Based on" (not "based off of"). "Despite" or "in spite of" (not "despite of"). "As well as" (not "as well to"). These patterns aren't logically necessary; they're just how English works.

Method 1: Read each phrase aloud. If it sounds unnatural, it's likely non-idiomatic. Example: "worried about" sounds natural; "worried of" sounds wrong. Method 2: Compare to how you've heard native speakers phrase it. If unsure, pick the most formal or standard phrasing option. Example: Between "different than" and "different from," "different from" is the standard idiom. These two methods catch 80% of idiomatic errors without needing to memorize a list.

Practice: Which sounds more natural? (1) "Afraid of spiders" vs. "Afraid to spiders." Answer: "Afraid of." (2) "Succeed in the exam" vs. "Succeed the exam." Answer: "Succeed in the exam." (3) "Responsible to parents" vs. "Responsible for parents." Answer: "Responsible to parents" (when you owe them responsibility) or "Responsible for" (when you care for them). Context matters, but standard patterns guide the choice.

(1) Agree with (person), agree to (proposal). (2) Capable of (not "capable to"). (3) Concern about/with (varies by context). (4) Based on (not "based off of"). (5) Despite/In spite of (not "despite of"). (6) Comprised of (not "comprised by"). (7) Comply with (not "comply to"). (8) Consist of (not "consist in"). (9) Contrast with (not "contrast to" in formal writing). (10) Different from (not "different than"). (11) Escape from (not "escape to"). (12) Focus on (not "focus to" or "focus of"). (13) Interested in (not "interested to"). (14) Responsible to (owes responsibility) vs. "Responsible for" (cares for). (15) Succeed in (not "succeed at" in formal writing). Memorizing these fifteen covers 70% of idiom questions on ACT English.

Idiom drill: Write three sentences for each of the fifteen above. Example: "I agreed with my friend on the plan." "I agreed to the proposal." By writing them, you'll internalize the patterns.

Idiomatic expressions aren't governed by logical grammar rules; they're patterns English has developed over centuries. ACT tests idioms to measure whether you write in natural, idiomatic English rather than awkward literal translations or non-standard phrasings. Students who recognize idiom patterns answer these questions instantly; students who analyze grammar get stuck.

Commit the fifteen common idioms to memory this week. Read ACT English passages and highlight idiomatic expressions. Notice how they sound versus alternative phrasings. By test day, recognizing idiomatic correctness will be reflex-level, and you'll answer these questions with the confidence of someone who speaks English naturally.