It was an upscale apartment complex.
no, a complex-complex sentence is just a complex sentence. there is no such thing as a complex-complex sentence.
abuse
collapse is good
Not a simple sentence, but a compound, complex or compound-complex may have its principal or independent clause in inverted order within the sentence.
He lived in a housing complex. This math problem is complex! The complex problem stumped many students.
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a complex compound word involves using multiple hard compound words in a sentence.
This is a simple sentence using just one part. It is a sentence because of the complex part.
In science we studied a cats and behaviour.
The component man was sick.
The students are studying because they have a test tomorrow.