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Year 3 - English

Using the comma rule in compound sentences

Simple, compound and adverbial complex sentences

Unit Summary

In this unit, pupils learn two comma rules within different sentence structures: compound and adverbial complex sentences. Pupils revise simple, compound and adverbial complex sentences and extend their knowledge by learning that an adverbial clause can come first or second in a complex sentence.

Lesson Summary

You can use the comma before "but" or "or" co-ordinating conjunctions in a compound sentence.

Key Notes

  • A group of words that contains a verb and makes complete sense is called a main clause.
  • Co-ordinating conjunctions join two main clauses to form a compound sentence.
  • If the co-ordinating conjunction "but" or "or" is used, there must be a comma before it in a compound sentence.
  • The comma tells the reader where the main clause demarcation is.
  • Different co-ordinating conjunctions have different meanings.

Vocabulary To Learn

  • main clause: a group of words that contains a verb and makes complete sense
  • co-ordinating conjunction: a word that joins two main clauses to form a compound sentence
  • compound sentence: a sentence formed of two main clauses and a joining word
  • comma: a punctuation mark used before "but" or "or" co-ordinating conjunctions in a compound sentence

Common Mistakes To Avoid

  • Pupils add a word after the co-ordinating conjunction not a main clause.

3 Quick Questions (With Answers)

1. Explain this English learning goal in two key points.

A group of words that contains a verb and makes complete sense is called a main clause. Co-ordinating conjunctions join two main clauses to form a compound sentence.

2. Define this language term and use it in a sentence. 'main clause'

a group of words that contains a verb and makes complete sense.

3. Correct this common English misunderstanding.

Mistake: Pupils add a word after the co-ordinating conjunction not a main clause. Correction: A co-ordinating conjunction in a compound sentence must join two complete main clauses. Any main clause must make complete sense.

More Lessons In This Unit

Browse all guides in the Year 3 English guide library.