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      Four sentence types

      Lesson details

      Learning outcome

      I can say and write four different sentence structures.

      Key learning points

      1. A sentence composed of one main clause is a simple sentence.
      2. A sentence composed of at least two main clauses joined by a co-ordinating conjunction is a compound sentence.
      3. A sentence composed of at least one main clause and an adverbial subordinate clause is an adverbial complex sentence.
      4. A sentence composed of at least one main clause and a relative subordinate clause is a relative complex sentence.
      5. Specific comma rules apply to the demarcation of clauses in compound and complex sentence structures.

      Keywords

      • Clause - a group of words that contains a verb

      • Simple sentence - a sentence about one idea that makes complete sense

      • Compound sentence - a sentence formed of two main clauses and a co-ordinating conjunction

      • Adverbial complex sentence - a sentence formed of a main clause and an adverbial subordinate clause

      • Relative complex sentence - a sentence formed of a main clause and a relative subordinate clause

      Common misconception

      Pupils may believe that any use of a co-ordinating conjunction creates a compound sentence.

      Remind pupils that sentences like 'We ate cheese and ham.' cannot be a compound sentence because it does not contain two main clauses.

      Teacher tip

      Don't expect pupils to be able to use a wide range of subordinating conjunctions without explicit teaching. In Oak lessons, the range of subordinating conjunctions taught is gradually increased over the primary years.

      Licence

      This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      Which is the correct definition of a clause?

      a group of words with no verb
      Correct answer: a group of words that contains a verb
      a group of words that contains a noun

      Q2.
      Which of the following are main clauses?

      as we laughed
      Correct answer: we laughed loudly
      which made me laugh
      Correct answer: the joke was hilarious

      Q3.
      Which of the following are subordinate clauses?

      Correct answer: when the snow began to fall
      it was very cold
      we stomped through the icy fields
      Correct answer: which were thickly covered

      Q4.
      Which of the following are true for subordinate clauses?

      Correct answer: There are different types of subordinate clause.
      Correct answer: A subordinate clause contains a verb.
      A subordinate clause makes complete sense on its own.
      Correct answer: A subordinate clause must be linked to a main clause to make complete sense.

      Q5.
      Which of the following are adverbial clauses?

      Correct answer: while we were waiting
      who was struggling
      which was delicious
      Correct answer: before we could begin

      Q6.
      What one thing makes a relative clause different to an adverbial clause?

      A relative clause does not make sense on its own.
      A relative clause is a type of subordinate clause.
      Correct answer: A relative clause begins with a relative pronoun.
      A relative clause is a group of words that contains a verb.

      6 Questions

      Q1.
      Match the types of simple sentence to the examples.

      Correct Answer:question,What type of tree is this?

      What type of tree is this?

      Correct Answer:command,Run towards that tree.

      Run towards that tree.

      Correct Answer:exclamation,How glorious this tree is!

      How glorious this tree is!

      Correct Answer:statement,This tree has been here for 300 years.

      This tree has been here for 300 years.

      Q2.
      Which of these are true for a compound sentence?

      Correct answer: It contains a co-ordinating conjunction.
      Correct answer: It contains at least two main clauses.
      Correct answer: It sometimes contains a comma before the co-ordinating conjunction.
      It contains just one main clause.

      Q3.
      Tick the compound sentences.

      Correct answer: We wanted to go, but it was too late.
      Correct answer: The door was open and we stepped through.
      We stepped confidently into the dark, eerie forest.
      Correct answer: We could stay in, or we could go out.

      Q4.
      Which of the following are found in an adverbial complex sentence?

      Correct answer: a main clause
      Correct answer: a subordinate clause
      Correct answer: a subordinating conjunction
      a relative pronoun

      Q5.
      Match the keywords to the examples.

      Correct Answer:adverbial clause,when we were ready

      when we were ready

      Correct Answer:relative clause,which I found confusing

      which I found confusing

      Correct Answer:main clause,we got ourselves ready

      we got ourselves ready

      Q6.
      Match the types of sentence to the examples.

      Correct Answer:simple sentence,Put that down!

      Put that down!

      Correct Answer:compound sentence,You can go, but please come back.

      You can go, but please come back.

      Correct Answer:adverbial complex sentence,Shut the door when you leave.

      Shut the door when you leave.

      Correct Answer:relative complex sentence,My sister, who is nine, loves paintball.

      My sister, who is nine, loves paintball.


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