- knowing that complex sentences makes connections between ideas, such as: to provide a reason, for example 'He jumped up because the bell rang.'; to state a purpose, for example 'She raced home to confront her brother.'; to express a condition, for example 'It will break if you push it.'; to make a concession, for example 'She went to work even though she was not feeling well.'; to link two ideas in terms of various time relations, for example 'Nero fiddled while Rome burned.'
- knowing that a complex sentence typically consists of a main clause and a subordinate clause