A subordinate clause is a dependent clause that works within a larger structure. In We stayed inside because the wind picked up, the subordinate clause gives a reason for the main clause we stayed inside.
Three common jobs for subordinate clauses
- Add circumstances. In When the wind died down, we opened the door, the subordinate clause tells us when we opened it.
- Describe a noun. In The door that faces the harbor is locked, the relative clause identifies the door.
- Fill a role in the larger clause. In We knew that the door was locked, the subordinate clause gives the content of what we knew.
Finite and nonfinite subordinate clauses
Because the wind picked up has the finite verb picked, which shows past tense. A subordinate clause can also use a nonfinite verb. In We stepped outside to check the roof, the infinitive clause gives the purpose of stepping outside.
