Fix ACT English dangling modifiers and faulty parallelism by putting descriptive phrases next to what they describe and matching items in a series.
The first noun after an opening phrase must be what the phrase describes.
"Running late, I grabbed my coat" — I am running late, not the coat.
Put a describing phrase directly beside the word it modifies.
A phrase next to a noun it cannot sensibly describe is misplaced.
Place "only," "just," "nearly," "almost" right before the word they restrict.
Every item joined by "and"/"or" shares the same grammatical form.
sketching, inking, and coloring — not "…and how to color."
Balance both sides of "not only … but also"; compare like things ("that of the coast," not "the coast").
A big block of ACT English questions turns on two closely related skills: putting a modifier next to the thing it describes, and keeping items in a list or comparison in parallel form. Both are really about matching — matching a description to its noun, and matching the shape of one item to the next. You will never be asked to define "dangling modifier" or "parallelism." You will be shown a sentence that reads a little off and asked which revision fixes it. Train these two matching instincts and a whole category of questions becomes quick.
A modifier is a word or phrase that describes something else, and English attaches it to the closest available noun. When a sentence opens with a descriptive phrase, the very next noun must be the thing that phrase describes. "Sprinting for the train, my backpack slipped off my shoulder" is wrong, because the noun right after the opener is "my backpack" — and a backpack cannot sprint. The sentence needs the sprinter next: "Sprinting for the train, I felt my backpack slip off my shoulder." This is the classic dangling modifier, and the ACT tests it constantly by putting the wrong noun in the subject slot right after an opening phrase.
The fix is mechanical. Read the opening phrase, ask "who or what is doing this?", and make sure that answer is the first noun after the comma. If the choices differ mainly in their subject, the right one is the choice whose subject actually performs the opening action.
Modifiers can go wrong anywhere, not just at the start. A phrase dropped in the wrong spot latches onto the wrong noun and creates an unintended, sometimes comic meaning. "The curator described the painting to the visitors that had hung in the palace for centuries" accidentally says the visitors hung in the palace. Move the modifier next to what it describes: "The curator described the painting that had hung in the palace for centuries to the visitors." The rule of thumb: keep a describing phrase as close as possible to the word it modifies, and be suspicious whenever a phrase sits next to a noun it could not sensibly describe.
Small limiting words — only, just, nearly, almost, even — change meaning depending on where they sit. "The intern only proofread two chapters" (did nothing but proofread) means something different from "The intern proofread only two chapters" (no more than two). Place the limiter directly before the word it restricts. The ACT uses these to test whether you notice that moving one word changes what the sentence claims.
Parallelism means that items joined in a series share the same grammatical form. If a list starts with -ing words, every item should be an -ing word; if it starts with nouns, every item should be a noun. "The workshop taught us sketching, inking, and how to color" breaks parallelism — two gerunds and then a clause. Fix it to "sketching, inking, and coloring." Whenever you see a list of two or more items joined by and or or, check that each item has the same shape. The odd item out is the error.
Certain paired conjunctions demand matching structures on both sides: not only … but also, either … or, neither … nor, both … and. Whatever grammatical form follows the first half must follow the second: "She was praised not only for her research but also for her teaching" balances "for her research" against "for her teaching." "Not only for her research but also she taught well" is unbalanced. Comparisons need parallel, logical partners too. "The climate of the coast is milder than the mountains" wrongly compares a climate to mountains; make the terms match: "milder than that of the mountains." When a sentence sets two things side by side, confirm they are genuinely comparable and grammatically alike.
Choose the best version: "Circling high above the canyon, ___ spotted the hikers waving from the ridge." (NO CHANGE: the binoculars / a red backpack / the pilot / the campsite)
Choose the best version: "The summer program promised campers hiking, kayaking, and ___ every afternoon by the lake." (NO CHANGE: to swim / a swim / swimming / they would swim)
Choose the phrase that best fills the blank: "The guide handed a map ___ to the tourists." (covered in coffee stains that led to the ruins / that led to the ruins covered in coffee stains / who led to the ruins covered in coffee stains / covered in coffee stains)
Choose the best version, given that the shop accepted no payment method other than cash: "The corner bakery ___." (NO CHANGE: only accepted payment in cash / accepted only payment in cash / accepted payment only in cash / accepted payment in only cash)
Choose the best version: "The new rail line was praised not only for cutting commute times ___." (NO CHANGE: but also it reduced pollution / but also for reducing pollution / but reducing pollution also / but also reduced the pollution)
Choose the best version: "The annual rainfall of the highlands is far greater than ___." (NO CHANGE: the desert / the desert has less rain / that of the neighboring desert / comparing it to the desert)
Leaving the wrong noun right after an opening phrase, so the phrase "dangles."
Ask who or what performs the opening action, and make sure that noun is the first one after the comma.
Dropping a descriptive phrase next to a noun it could not sensibly describe.
Slide the modifier so it sits directly beside the word it actually modifies; distrust any phrase beside an illogical noun.
Placing "only," "just," or "nearly" carelessly, changing the meaning of the sentence.
Put the limiting word immediately before the exact word it is meant to restrict.
Mixing grammatical forms in a list or across "not only … but also."
Make every item share the same form, and balance both halves of a correlative pair or comparison.
Rushing to finish before the tide came in, ___ was nearly swept off the rocks by an unexpected wave.
Which choice best fits the conventions of Standard English?
The internship taught her to draft budgets, to interview sources, and ___ under tight deadlines.
Which choice best fits the conventions of Standard English?
The scientist presented her findings to the board members ___.
Which choice best fits the conventions of Standard English?
The meaning is that the volunteers repaired no houses other than the two nearest the river.
The volunteers ___.
Which choice best fits the conventions of Standard English?
The renovated theater was celebrated not only for its restored murals ___.
Which choice best fits the conventions of Standard English?
The population of the coastal city grew far more rapidly last decade than ___.
Which choice best fits the conventions of Standard English?
Master ACT English agreement questions by finding the true subject and antecedent, ignoring the words the test buries in between, and matching number every time.
Choose the right ACT English verb by reading the sentence for time cues, keeping tense consistent, and using standard past and participle forms.
Master ACT English concision questions by cutting repeated ideas and empty filler — when several choices are all correct, the shortest clear one almost always wins.