Complex sentences will be those composed of a dependent clause and an independent clause. On the other hand, Compound-Complex sentences will be those formed by more than one independent clause and more than one dependent clause.
An example of a complex sentence is the sentence "She tried to turn on the faucet when she realized it was broken." In this sentence, the clause "she tried to turn on the faucet" is the independent clause, as it has complete meaning. On the other hand, the clause "when she realized that it was broken" is the independent clause because it does not have complete meaning.
An example of a Compound-Complex sentence is the sentence "When I grow up, I want to be a ballerina and make my dad happy." In that sentence, we can see two independent clauses which are "I want to be a ballerina" and "make my dad happy." These clauses are linked to a dependent clause which is "When I grow up."
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