- Define and explain Punctuation That Works in your own words
- Use key terms such as synonym accurately
- Apply what you have learned to new examples and questions
- Avoid the common mistakes learners make with this topic
This lesson focuses on Punctuation That Works: master commas, apostrophes and colons so your meaning is never in doubt.
Master commas, apostrophes and colons so your meaning is never in doubt.
Key ideas
Punctuation controls meaning
Commas separate items and clauses so readers know where ideas begin and end. Compare 'Let's eat, Grandma!' with 'Let's eat Grandma!' — one comma decides whether Grandma joins dinner or becomes it. Punctuate deliberately, not by guesswork.
Vary your sentence types
Simple sentences hit hard. Compound sentences link equal ideas with and, but or so. Complex sentences use subordinate clauses to show how ideas connect — because, although and when reveal cause and contrast. Mixing all three keeps writing lively; using only one type sounds robotic.
Key term — synonym: A word with a similar meaning to another, such as happy and joyful. Synonyms let you avoid repetition and fine-tune meaning.
Add the missing punctuation: its raining so we cant play outside said Tom.
Find the speech: the words Tom actually says are its raining so we cant play outside. Add inverted commas around the speech and capitalise its first word. Fix its to it's — it means it is, so the apostrophe shows the missing letter. Fix cant to can't for the same reason. Add a comma before the closing inverted commas: "It's raining so we can't play outside," said Tom.
Answer: It's raining so we can't play outside, said Tom — with inverted commas around the speech: "It's raining so we can't play outside," said Tom.
- Comma splices Joining two main clauses with only a comma is an error: It rained, we stayed in. Use a full stop, and, or a semicolon instead.
- Confusing its and it's It's always means it is or it has. If you cannot replace it with it is, write its with no apostrophe.
Practice
Showing possession and showing missing letters.
The bell rang. Everyone left. (Equally correct: The bell rang, so everyone left.).
Although it rained.
The dog's bone.
Quick check
Which of these best defines "synonym"?
Give a more precise synonym for nice to describe a kind person.
- Punctuation That Works: master commas, apostrophes and colons so your meaning is never in doubt.
- Punctuation controls meaning: Commas separate items and clauses so readers know where ideas begin and end.
- apostrophe: A mark with two jobs: showing possession (the dog's bone) and showing missing letters (don't, can't).
- Watch out for: comma splices