simple, compound, complex, or compound-complex?

1. Yes, I have a bad case of the flu, and because I need to get well soon, I won’t think about returning to school just yet.
compound

2. Because they have been preserved well over time, many ancient scrolls can be read by those who know Hebrew; included on the scrolls is the oldest spelling of "Jerusalem."
compound complex

3. However, when David came to conquer the city with his army, he discovered that the Jebusites got their drinking water from a spring just outside the city walls.
compound complex

4. The president is elected to a five-year term, yet most of his or her duties are ceremonial.
compound

5. David's nephew, J was able to unlock the city gates at night when he swam through the tunnel.
complex

6. When we visited the museum, we also marveled at documents containing historical accounts written thousands of years ago; the accounts are recorded on clay and stone.
compound complex

7. Eighteen-year olds can vote in Israel, but they must also serve in the armed forces.
compound

8. Israeli men and women serve in the armed forces; however, men serve for one year more than women do.
compound complex

9. Tools and weapons that date back to before 500 BCE show great skill, and they serve as evidence that their makers were very talented.
compound

I am pretty sure that almost all of my answer are wrong... if not all of them. Help?

1. and 9 are wrong. The rest are right.

http://www.chompchomp.com/terms/subordinateclause.htm

No problem, I'm here to help! Let's go through the sentences and determine their types.

1. "Yes, I have a bad case of the flu, and because I need to get well soon, I won't think about returning to school just yet."
- This is a compound sentence because it contains two independent clauses ("I have a bad case of the flu" and "I won't think about returning to school just yet") joined by the coordinating conjunction "and."

2. "Because they have been preserved well over time, many ancient scrolls can be read by those who know Hebrew; included on the scrolls is the oldest spelling of 'Jerusalem.'"
- This is a compound-complex sentence because it contains two independent clauses ("many ancient scrolls can be read by those who know Hebrew" and "included on the scrolls is the oldest spelling of 'Jerusalem'") joined by the coordinating conjunction "and," and it also has a dependent clause ("Because they have been preserved well over time").

3. "However, when David came to conquer the city with his army, he discovered that the Jebusites got their drinking water from a spring just outside the city walls."
- This is a complex sentence because it contains one independent clause ("he discovered that the Jebusites got their drinking water from a spring just outside the city walls") and one dependent clause ("when David came to conquer the city with his army").

4. "The president is elected to a five-year term, yet most of his or her duties are ceremonial."
- This is a compound sentence because it contains two independent clauses ("The president is elected to a five-year term" and "most of his or her duties are ceremonial") joined by the coordinating conjunction "yet."

5. "David's nephew, J was able to unlock the city gates at night when he swam through the tunnel."
- This is a complex sentence because it contains one independent clause ("David's nephew was able to unlock the city gates at night") and one dependent clause ("when he swam through the tunnel").

6. "When we visited the museum, we also marveled at documents containing historical accounts written thousands of years ago; the accounts are recorded on clay and stone."
- This is a compound-complex sentence because it contains two independent clauses ("we also marveled at documents containing historical accounts written thousands of years ago" and "the accounts are recorded on clay and stone") joined by the coordinating conjunction "and," and it also has a dependent clause ("When we visited the museum").

7. "Eighteen-year olds can vote in Israel, but they must also serve in the armed forces."
- This is a compound sentence because it contains two independent clauses ("Eighteen-year-olds can vote in Israel" and "they must also serve in the armed forces") joined by the coordinating conjunction "but."

8. "Israeli men and women serve in the armed forces; however, men serve for one year more than women do."
- This is a compound-complex sentence because it contains two independent clauses ("Israeli men and women serve in the armed forces" and "men serve for one year more than women do") joined by the coordinating conjunction "however," and it also has a dependent clause ("however").

9. "Tools and weapons that date back to before 500 BCE show great skill, and they serve as evidence that their makers were very talented."
- This is a compound sentence because it contains two independent clauses ("Tools and weapons that date back to before 500 BCE show great skill" and "they serve as evidence that their makers were very talented") joined by the coordinating conjunction "and."

I hope this helps! Let me know if you have any more questions.

Let's analyze each sentence to determine whether it is simple, compound, complex, or compound-complex.

1. Yes, I have a bad case of the flu, and because I need to get well soon, I won’t think about returning to school just yet.
This sentence is compound because it contains two independent clauses, "I have a bad case of the flu" and "I won't think about returning to school just yet," connected by the coordinating conjunction "and."

2. Because they have been preserved well over time, many ancient scrolls can be read by those who know Hebrew; included on the scrolls is the oldest spelling of "Jerusalem."
This sentence is compound-complex because it contains two independent clauses, "many ancient scrolls can be read by those who know Hebrew" and "included on the scrolls is the oldest spelling of 'Jerusalem'," connected by the semicolon. It also contains one dependent clause, "Because they have been preserved well over time," which functions as an adverbial clause.

3. However, when David came to conquer the city with his army, he discovered that the Jebusites got their drinking water from a spring just outside the city walls.
This sentence is complex because it contains one independent clause, "he discovered that the Jebusites got their drinking water from a spring just outside the city walls," and one dependent clause, "However, when David came to conquer the city with his army," functioning as an adverbial clause.

4. The president is elected to a five-year term, yet most of his or her duties are ceremonial.
This sentence is simple because it contains only one independent clause, "The president is elected to a five-year term," and no dependent clauses or coordinating conjunctions.

5. David's nephew, J was able to unlock the city gates at night when he swam through the tunnel.
This sentence is complex because it contains one independent clause, "David's nephew, J was able to unlock the city gates at night," and one dependent clause, "when he swam through the tunnel," functioning as an adverbial clause.

6. When we visited the museum, we also marveled at documents containing historical accounts written thousands of years ago; the accounts are recorded on clay and stone.
This sentence is compound-complex because it contains two independent clauses, "we also marveled at documents containing historical accounts written thousands of years ago" and "the accounts are recorded on clay and stone," connected by the semicolon. It also contains one dependent clause, "When we visited the museum," functioning as an adverbial clause.

7. Eighteen-year olds can vote in Israel, but they must also serve in the armed forces.
This sentence is compound because it contains two independent clauses, "Eighteen-year olds can vote in Israel" and "they must also serve in the armed forces," connected by the coordinating conjunction "but."

8. Israeli men and women serve in the armed forces; however, men serve for one year more than women do.
This sentence is compound-complex because it contains two independent clauses, "Israeli men and women serve in the armed forces" and "men serve for one year more than women do," connected by the semicolon. It also contains one dependent clause, "however," functioning as a coordinating conjunction.

9. Tools and weapons that date back to before 500 BCE show great skill, and they serve as evidence that their makers were very talented.
This sentence is compound because it contains two independent clauses, "Tools and weapons that date back to before 500 BCE show great skill" and "they serve as evidence that their makers were very talented," connected by the coordinating conjunction "and."

I hope this helps clarify the sentence structures for you. Let me know if you have any further questions!