The sentence 'If you start to feel hungry, fix yourself a snack.' is a complex sentence. It consists of one independent clause and one dependent clause. The use of a dependent clause is a key characteristic of complex sentences in English grammar.
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The sentence given is a complex sentence, which consists of one independent clause and one dependent clause. The independent clause can stand on its own, while the dependent clause cannot. Recognizing the differences between simple, compound, complex, and compound-complex sentences is crucial in mastering English sentence structure. ;