The band closes where a sentence is actually built. A sentence is a hierarchy: whatever sits in the main clause is what it ASSERTS, and whatever is tucked into a subordinate clause is handed over as already agreed. So the same two facts in the same sentence can put either one beyond question, depending only on which half a writer dropped it into — and that choice is the last and finest version of the move this whole band has been tracking. On top of that sit the repairs the tests actually ask for: parallel structure, dangling modifiers, agreement across a long subject, and the usage pairs worth owning. Five tabs — cards for clauses, parallelism and usage, hints with the assert-or-assume test, a quiz built on sentences that claim what nobody meant, and a workshop where you sort clauses, repair a sentence, label a hierarchy and argue which half a fact belongs in.
Two facts in one sentence: the survey was flawed, and the plan was approved. Both are here. Both are true. They are not being treated the same way.
A sentence is a hierarchy of claims. Whatever sits in the main clause is ASSERTED — offered to you to weigh. Whatever sits in a subordinate clause is ASSUMED — handed over as already agreed, and skimmed past on the way to the main verb. Use the swap test: rewrite with the clauses reversed, keep every fact, and whatever changes is the work the structure was doing.
What people get wrong
⚠️People often think…
Both facts are in the sentence, so the sentence is even-handed.
Presence is not rank. Readers weigh what a sentence asserts and skim what it presupposes, because presupposition is how language handles ground that is meant to be shared — nobody could read at all if they stopped at every assumption. So a contested fact in a subordinate clause is fully visible and practically invisible at once. Nothing was hidden; it was ranked below the level at which people object.
Ask what this sentence assumed in order to say what it said.
⚠️People often think…
Parallel structure is just a style preference.
Parallel form signals that items belong to one set and can be measured against each other. Break the shape and the signal breaks, and a reader stumbles without knowing why. Usually the writer had stopped holding the items in one category too — “her results were better than the other schools” compares results with institutions, which is not a coherent comparison at all.
Fix the list and you often find an item that never belonged in it.
⚠️People often think…
Everyone knows what a dangling modifier means, so it does not matter.
True only when the accidental reading is absurd. Rain that walks to school gets repaired silently by every reader. But “Having failed the inspection, the council closed the pool” reads as an accusation against the council, and it is entirely believable, so nothing alerts anyone. The rule is mechanical: whatever noun follows the comma is what the phrase describes.
The ones that make you laugh are harmless. Worry about the plausible ones.
Find the main clause, then swap
1Watch one
Apply the swap test to: “While attendance fell slightly, the new timetable was judged a success.”
Find the two facts: attendance fell, and the timetable was judged a success. Both are present.
Which could stand alone? “The new timetable was judged a success.” So that is the main clause, and it is what is asserted. While demotes the other one.
Swap, keeping every fact: “While the new timetable was judged a success, attendance fell slightly.”
What changed: the original is a report of a success with a caveat; the swap is a report of falling attendance despite a favorable judgement. Neither is untrue, and they are different news.
2Do one with me
Name what each part of a sentence does.
A clause that could stand alone as a sentence is
A clause beginning with although or because is
Whatever sits in the main clause is what the sentence
💬One sentence, then you move on
Why does a reader argue with the main clause and not the subordinate one?
3Try one
To show what a sentence’s structure was doing, you rewrite it with the clauses ____. One word.
I want a hint first
The main clause becomes the subordinate one, and the subordinate one becomes the main.
💬Last one — then you're done here
Neither version of the survey sentence is untrue. Why does that make the ranking worth noticing?
Where this goes
Where this lives
Every apology that begins “While mistakes were made, the team acted in good faith” has already decided which half you will remember. So has every school report, every press release, every message that starts with although.
What this feeds
That is the 9–10 band. Grades 11–12 point the same instrument at longer texts, and at writers who conceal the claim on purpose.
Find one sentence today that starts with although or while, and swap its halves.
One card at a time — tap “Show me” to check yourself, then Next. Start at Foundation; when those feel easy, climb.
Helpful Hints
⚡ The one idea
A sentence is a hierarchy of claims. Whatever sits in the main clause is what the sentence ASSERTS and invites you to weigh; whatever sits in a subordinate clause is handed over as already agreed. “Although the survey was flawed, the council approved the plan” asserts the approval and assumes the flaw. Swap them — “Although the council approved the plan, the survey was flawed” — and the flaw becomes the news. Same two facts, and a writer decided which one you would get to argue with.
📐 Two kinds of clause
Clause
Test
What it does
Independent
could stand alone as a sentence
asserts — you are invited to weigh it
Subordinate
starts with although, because, when, if, that…
assumes — handed over as settled
🪜 Parallel structure
Items joined in a list or a comparison must share a grammatical shape. “She likes reading, hiking and to cook” stumbles because the third item changed form. It is not only a style rule: a broken parallel is usually a sign that the writer stopped thinking of the items as members of one set, and a reader feels the logic slip before they can name it.
🪂 The dangling modifier
An opening phrase attaches to whatever noun comes next. “Having failed the inspection, the council closed the pool” says the council failed the inspection. “Walking to school, the rain started” has the rain walking to school. The rule is mechanical: whatever follows the comma is what the phrase describes, so put the right noun there.
📋 Usage pairs worth owning
Pair
How to choose
affect / effect
affect is usually the verb; effect is usually the noun
fewer / less
fewer for things you can count; less for quantities you cannot
who / whom
he → who; him → whom
its / it’s
it’s expands to it is; its is possessive
between / among
between for two or for distinct pairs; among for an undivided group
lie / lay
lie takes no object; lay puts something down
🎯 How you will be asked
“Which choice best combines the sentences at the underlined portion?”
“Which version maintains parallel structure?”
“The writer wants to emphasize the delay. Which is best?”
“Which choice corrects the misplaced modifier?”
“NO CHANGE / fewer / less / lesser”
✅ Before the test, can you…
Say which half of a sentence a writer put the disputable fact in?
Rewrite a sentence to emphasize the other fact instead?
Repair a broken parallel and say what it was doing to the logic?
Spot the noun a dangling modifier accidentally describes?
Find the real subject under a long phrase and make the verb agree?
Pick your level
Look back at anything you missed — the hint that appeared is exactly what to reread tonight.
How sure did you feel?
Workshop
Work like a reader who can see the hierarchy: sort twelve sentences by what is wrong or what is ranked, order the repair, label a two-level sentence, then argue which half a fact was put in.
Your practice never leaves this device. There is no account and no sign-in. Your work is saved in this browser only, and you can erase it whenever you want.
Your practice record — saved on this device
This is your record of the module on screen — it stays here and goes nowhere. Independent means you got it right on the first tap; supported means you got it after the explain-and-retry, or marked ‘I had it’ on a revealed answer. Both count, and neither is a grade. If your teacher asks, copy the row or show them this screen.
Date
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Topic
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Level
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Independent
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Supported
0 of 0
Hints used
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Cards studied
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Lab
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Traps met
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Explained in own words
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Confidence
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The answer key is for a teacher: it prints only from here, for the unit on screen. Print the study packet prints the study pages and a blank quiz — never the answers.