Here's what you might be looking for:
1. Complex Sentences: These sentences contain one independent clause and at least one dependent clause. They are longer and more complex than simple sentences.
* Example: "Because the weather was so beautiful, we decided to go for a hike in the mountains."
2. Compound Sentences: These sentences combine two or more independent clauses using conjunctions like "and," "but," or "or." They are also typically longer than simple sentences.
* Example: "The sun was shining brightly, and the birds were singing in the trees."
3. Compound-Complex Sentences: These sentences contain at least two independent clauses and one or more dependent clauses. They are the most complex type of sentence.
* Example: "Although it was raining, we still enjoyed our picnic because the food was delicious, and the company was great."
4. Sentences with Modifiers: Sentences can be extended by adding modifiers like adjectives, adverbs, prepositional phrases, participial phrases, and relative clauses. These add detail and information to the sentence.
* Example: "The old, rusty car with a dented hood rumbled down the dusty road."
Instead of "extended sentence," focus on the grammatical concepts of:
* Sentence types: simple, compound, complex, compound-complex
* Sentence structure: independent clauses, dependent clauses, conjunctions
* Modifiers: adjectives, adverbs, phrases, clauses
By understanding these concepts, you can learn to analyze and construct grammatically correct and engaging sentences.