A complex sentence is made up of two clauses: a main clause and a subordinate clause.
A main clause makes sense on its own.
- It is a simple sentence.
- It is independent.
A subordinate clause does not make sense on its own.
- It is dependent on the main clause.
To help us remember the subordinating conjunctions we can use I SAW A WABUB (see below).
Points to remember:
- If the subordinate clause comes first, you need a comma to separate the two clauses.
- If the subordinate clause is at the end of the sentence, you do not need a comma.