ACT Knowledge of Language: Precision, Style & Tone

Knowledge of Language questions test whether you can choose precise, appropriately styled language for a given passage. About 10–12 of the 75 English questions fall into this category. You'll encounter three main subtypes: choosing the most precise word for a meaning, eliminating redundancy (phrases that say the same thing twice), and matching the tone of the passage (formal vs. informal, objective vs. opinionated).

The ACT always provides four choices, and on Knowledge of Language questions all four may be grammatically correct — the right answer is the one that is most precise, concise, and consistent with the passage's established tone.

For redundancy questions, look for pairs of words that mean the same thing: "past history," "future plans," "end result," "basic fundamentals." The ACT loves this type. If two words in a phrase overlap in meaning, one should be cut.

For tone questions, read a larger chunk of the passage — at least the paragraph — to establish whether the writer is formal or conversational, serious or humorous. Then eliminate choices that break that register. A personal essay written in casual first person should not suddenly use bureaucratic language.

For word choice, eliminate options that are technically possible but imprecise. If the passage is describing a "slow decrease," choose "declined" over "plummeted" — intensity matters.

Choosing the longest or most sophisticated-sounding answer is a common trap. ACT English rewards precision and conciseness, not impressive vocabulary. The simplest correct option is often right.

Ignoring tone context and choosing a grammatically correct but tonally inconsistent option is another frequent error. Read at least two surrounding sentences before answering style questions.

On redundancy questions, students miss embedded redundancy — phrases like "the reason is because" (reason and because overlap) or "completely finished" (completely is implied by finished).

Build a personal list of common redundant phrases from ACT practice materials. The same patterns appear repeatedly: "still remains," "close proximity," "unexpected surprise," "advance warning." Recognizing them by sight saves time.

For style questions, practice reading passages in different registers before answering. ScoreBooster's ACT English sessions include passages in both formal and informal registers, training you to switch style awareness quickly.