--- title: "Brackets and dashes for parenthesis" description: "Use round brackets, dashes and commas to mark extra information in a sentence. Check that removing the information leaves the main message clear." canonical: https://lightmysky.com/learn/english/brackets-and-dashes-for-parenthesis-mt_m3-eXac3aP source: https://lightmysky.com/learn/english/brackets-and-dashes-for-parenthesis-mt_m3-eXac3aP.md retrieved: 2026-11-12 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # Brackets and dashes for parenthesis Use round brackets, dashes and commas to mark extra information in a sentence. Check that removing the information leaves the main message clear. Subject: English · Area: Grammar & Punctuation · Ages 9 to 10 Page: https://lightmysky.com/learn/english/brackets-and-dashes-for-parenthesis-mt_m3-eXac3aP ## Ready when they can - Enclose a mid-sentence aside in paired round brackets, and check that removing it leaves the main message clear. - Use paired long dashes around a mid-sentence aside, rather than hyphens. - Choose punctuation for the intended effect: brackets usually suggest background information, commas keep a detail closely connected, and dashes can add emphasis. ## Lesson: Extra information: brackets, dashes, and commas A parenthesis is extra information added to a sentence. In the middle of a sentence, mark its beginning and end with round brackets, dashes or commas. Remove the aside to check the sentence. The remaining words must form a complete sentence and keep the main message clear. Round brackets always need an opening ( and a closing ). **Example.** Our boat (painted blue) crossed the lake. Remove 'painted blue': Our boat crossed the lake. The main message stays clear. But in 'Choose the boat with the red flag', the flag tells us which boat to choose. Removing those words can change the message even though the sentence still sounds complete. Dashes can give an aside extra emphasis: Our boat – painted blue – crossed the lake. These spaced long dashes are punctuation marks. A short hyphen, as in blue-green, joins word parts and is not a substitute. If an aside contains a list with commas, brackets or dashes can make its boundaries clearer. *(drawing: The commas mark where the extra detail begins and ends.)* Commas usually keep an aside closely connected to the sentence: Our boat, painted blue, crossed the lake. Brackets usually make it feel like background information. Dashes can draw more attention to it. These are writing effects, not measured volumes or rules about speaking loudly. A detail in brackets can still be useful or interesting. At the end of a sentence, brackets still come in a pair: We reached the shore (before lunch). The full stop goes after the closing bracket. A comma or dash aside at the end does not need a second comma or dash before the full stop: We reached the shore – just in time. **Tip.** Find the main message first. Then check the aside's boundaries. For a middle aside, the opening and closing marks must be the same kind. **Recap.** Keep the main message clear. Use matching marks around a middle aside. Brackets suggest background detail; dashes can add emphasis; commas keep the detail closely connected. *Original lesson, practice and learning-card text written for this dataset. Khan Academy punctuation records informed factual checks and question design.* ## Practice 24 questions on this page, each with its working shown. ## Needs first - [Commas in lists](https://lightmysky.com/learn/english/commas-in-lists-mt_ntqNLHsj5n) ## Opens up - [Advanced Punctuation for Clarity](https://lightmysky.com/learn/english/advanced-punctuation-for-clarity-mt_lsO9O-_eZH)