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      Using the comma rule in adverbial complex sentences

      Lesson details

      Learning outcome

      You can use the comma rule to write accurate adverbial complex sentences.

      Key learning points

      1. The position of an adverbial subordinate clause can move in an adverbial complex sentence.
      2. If the adverbial clause comes first in the sentence, it is followed by a comma to demarcate from the main clause.
      3. If the main clause comes first in the sentence, there is no comma used.
      4. A comma is a punctuation mark that has more than one purpose.
      5. Commas often help the reader see clause demarcation in a range of sentence types.

      Keywords

      • Clause - a group of words that contains a verb

      • Adverbial clause - a type of subordinate clause that starts with a subordinating conjunction

      • Main clause - a group of words that contains a verb and makes complete sense

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

      Common misconception

      Pupils do not know when to use a comma to demarcate between the adverbial and main clause.

      If the adverbial clause is first in the sentence, a comma is placed after it. If the main clause is first, no comma is placed after it.

      Teacher tip

      Use a gesture to model the comma, for example a curved hand slicing downwards through the air.

      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.
      Where can an adverbial clause appear in a sentence?

      Correct answer: at the beginning or end
      only at the end
      only at the beginning

      Q2.
      Fill in the gap: an adverbial clause only makes sense if it is joined to a clause.

      Correct Answer: main, Main

      Q3.
      What starts an adverbial clause?

      a co-ordinating conjunction
      a preposition
      Correct answer: a subordinating conjunction

      Q4.
      Which of these groups are subordinating conjunctions?

      Correct answer: when so because
      my your our
      her his their
      and but or

      Q5.
      Fill in the gap: commas can separate words or __________ in sentences.

      Correct answer: clauses
      punctuation
      capital letters

      Q6.
      When does an adverbial complex sentence need a comma?

      it never requires one
      Correct answer: when the adverbial clause is at the end
      it always requires one
      when the adverbial clause is at the beginning

      6 Questions

      Q1.
      Fill in the gap: any clause is a group of words that contains a .

      Correct Answer: verb, vurb, verb, Verb

      Q2.
      Which clause starts with a subordinating conjunction?

      main
      relative
      Correct answer: adverbial

      Q3.
      Fill in the gap: to form a complex sentence, you must join a main clause to any type of clause.

      Correct Answer: subordinate, subbordinate, suborddinate, subordinit, Subordinate

      Q4.
      Which of these groups are subordinating conjunctions?

      Correct answer: because when so
      and but or
      mine yours theirs
      I me my

      Q5.
      Match the subordinating conjunction to its purpose.

      Correct Answer:because,for giving a reason

      for giving a reason

      Correct Answer:when,for giving a time frame

      for giving a time frame

      Correct Answer:so,for giving a result

      for giving a result

      Q6.
      Fill in the gap: if the adverbial clause comes __________ in a complex sentence, a comma is placed after it ends and before the main clause begins.

      Correct answer: first
      second
      last

      To help you plan your 3 English lesson on: Using the comma rule in adverbial complex sentences, download all teaching resources for free and adapt to suit your pupils' needs...