Composite Sentence

Compound sentence

Complex
Subject clauses
Predicate clauses
Object clauses
Adverbial clauses
Attribute clauses

Subject clauses which perform the function of predicative and may be introduced by conjunctions that, if, whether and such conjunctive words as who, what, which, when, why, how and others.
That you may meet him at the party is quite possible.
What I need now is someone to do the job.

Predicative clauses which perform the function of predicative and may be introduced by the same conjunctions and conjunctive words as subject clauses
His only desire was that his family shouldn’t interfere with his plans.

Object clauses which modify verbs and adjectives as objects to them and may be introduced by the same conjunctions and conjunctive words as subject clauses