Simple Examples:
* Since I had forgotten my keys, I couldn't get into the house. (Thought: "I need my keys to get into the house.")
* Because the exam was difficult, I felt anxious. (Thought: "This exam is difficult, and I'm worried about doing well.")
* Although she was tired, she continued working. (Thought: "I'm tired, but I need to keep working.")
More Complex Examples:
* As I pondered the problem, a solution began to form in my mind. (Thought: "This is a problem, I need to think about it.")
* While he was listening to the lecture, he couldn't help but think about his upcoming vacation. (Thought: "This lecture is boring, I'd rather be on vacation.")
* Because she had always been curious about the world, she decided to travel extensively. (Thought: "I want to learn more about different places, so I should travel.")
Key Points:
* Subordinate conjunctions: These words join a dependent clause (which cannot stand alone) to an independent clause (which can). Some common subordinate conjunctions include: because, since, although, while, as, if, unless, before, after, when, where.
* Thought: The sentence must convey a thought process, feeling, or understanding. This can be explicit (like in the examples above) or implied.
Let me know if you'd like more examples or have any other questions!