I'm having trouble understanding what kind of sentences these are:

Compound?
Compound-complex?
Declarative?
Interrogative?
Imperative?
Loose?
Periodic?

Thank you!

Tyr here:
http://www.eslincanada.com/englishlesson2.html

Then here:

http://www.arts.uottawa.ca/writcent/hypergrammar/sntorder.html

Sure! Let's go through each type of sentence to help you understand them better:

1. Compound Sentence: A compound sentence consists of two or more independent clauses (complete sentences) joined together by a coordinating conjunction (such as "and," "but," "or," etc.) or a semicolon. For example: "I enjoy going for a walk, and I love listening to music."

2. Compound-Complex Sentence: A compound-complex sentence is a combination of a compound sentence and a complex sentence. It has two or more independent clauses and at least one dependent clause. For example: "I went to the store, but I couldn't find what I was looking for because they were out of stock."

3. Declarative Sentence: A declarative sentence makes a statement or gives information. It ends with a period. For example: "She is studying for her exams."

4. Interrogative Sentence: An interrogative sentence asks a question. It ends with a question mark. For example: "What time is the meeting tomorrow?"

5. Imperative Sentence: An imperative sentence gives a command or makes a request. It can end with a period or an exclamation mark. For example: "Please close the door" or "Leave me alone!"

6. Loose Sentence: A loose sentence is a sentence in which the main clause comes first and is followed by one or more subordinate clauses or phrases. For example: "I went to the store, although it was raining, to buy some groceries."

7. Periodic Sentence: A periodic sentence is a sentence in which the main clause is intentionally held until the end, creating suspense or emphasis. For example: "In spite of the pouring rain, the strong winds, and the treacherous road conditions, I arrived at my destination."

To learn more in detail about sentence types and sentence order, you can visit the links you provided. They contain useful explanations and examples to help you understand the different types of sentences and their structures.