Introductory clauses are dependent clauses

How do you identify an introductory clause?

Just like all other clauses, an introductory clause should include a subject and a verb. (If it doesn’t include both of these, it’s an introductory phrase). Introductory clauses start with adverbs such as after, although, as, because, if, since, while, though, until and when.

How do you introduce a clause?

A subordinate clause is introduced by a subordinating conjunction or a relative pronoun. Example: I was resting while he was swimming laps. Compound sentences consist of two or more main clauses (independent clauses) joined by a conjunction.