Short on time? This page is the recap. For explanations and worked examples, use the full study guide.
Recap
- Modifiers, whether words, phrases or clauses, qualify, clarify or specify information about the thing they are attached to.
- To reduce ambiguity, place a modifier closest to the word, phrase or clause it modifies.
- Parenthetical elements are not essential to understanding what they describe; they interrupt the sentence to add information that may address an audience’s needs and/or advance a writer’s purpose.
- They are set off by commas (quiet), dashes (emphatic) or parentheses (quietest).
Key relationships
| Problem or tool | Example | Repair or effect |
|---|---|---|
| Misplaced modifier | “She served sandwiches to the guests on paper plates.” | “She served sandwiches on paper plates to the guests.” |
| Dangling modifier | “Walking home, the rain began.” | “Walking home, I felt the rain begin.” |
| Squinting modifier | “The teacher said on Friday she would resign.” | Decide the meaning; move “on Friday” |
| Essential (restrictive) | “Pupils who cheat lose marks.” | No commas; identifies which pupils |
| Non-essential | “The pupils, who cheated, lost marks.” | Commas; extra information about all of them |
| Appositive | “The mayor, a former teacher, spoke.” | Renames or describes |
| Dash aside | “The plan—risky but bold—won.” | Emphasis |
| Parenthesis | “The plan (risky) won.” | Quiet optional comment |
What a parenthetical element can do
- Add background.
- Qualify in passing.
- Add personal voice or tone.
- Emphasise by setting something apart.
- Concede quietly (“though imperfect”).
Public-domain anchor
Abraham Lincoln (1863): “The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract.” “Living and dead” widens the tribute to include survivors; “who struggled here” identifies the men; “far above our poor power to add or detract” is a modifier that sets the soldiers’ deed against the speakers’ modesty.
Worked mini-example
Marlbridge sentence: “The new clinic, which opened in March, already treats two hundred patients a week.”
- Parenthetical: “which opened in March” (non-essential clause between commas).
- Function: gives background so the audience sees how quickly the clinic has grown.
- Test: remove it; the sentence still works.
- Analysis sentence: “The aside about the opening month shows how quickly the clinic has become busy, which supports the writer’s claim that it meets a real need.”
Mistakes to avoid
- Leaving a modifier far from its target.
- A dangling modifier with no clear subject.
- Commas around essential information (or none around non-essential).
- Overusing asides until the main sentence is lost.
- Naming the punctuation without the function.
- Treating dashes and parentheses as the same.
Quick self-check
- Fix: “Running for the bus, the bag was left behind.” (For example: “Running for the bus, she left her bag behind.”)
- Which is the parenthetical element in “The report, published last week, was criticised”? (published last week)
- Which punctuation gives an aside the most emphasis: commas, dashes or parentheses? (Dashes.)
Next: practice questions.