Example:the trees are regaining their leaves because the season of spring is fast approaching. Please note:this means that we have 1 independent clauses (the one highlighted with color blue) and 1 dependent clause (the underlined words) are connected by subordinating conjunctions, (the one highlighted with yellow and please familiarize the words above) will be considered automatically as a complex sentence 4. Compound complex-this usually composed of 2 independent clauses and 1 or more dependent clauses. Example:I like mathematics but my brother likes biology because he wants to be a doctor.

Please note. This is already a combination of compound sentence and complex sentence.as you can see in the sentence,we already have a compound sentence (highlighted with color blue) connected by coordinating conjunction BUT. As what we've said, a complex sentence usually contains subordinating conjunctions,so in our example we have the word BECAUSE and it is one of the subordinating conjunctions. This simply means that if it contains both coordinating conjunction and subordinating conjunction automatically that is a compound-complex type of sentence.