Yeah, sure you can start a sentence with although.
For example: Although I new I couldn't afford to make the monthly payments on the car, I bought it anyway.
Yes, you can start a sentence with "although." For example: "Although it was raining, we decided to go for a walk."
Although it was raining heavily, he decided to go for a run in the park.
"Although" would be better.
well I think yes because you can start the sentence like this:Although it was rainy i went out with my friends.
Yes, it is a fragment, it's not a sentence. It could be a sentence without the word although. "I finished." is a sentence. Using the word "although" needs a sentence that the word is referring to either in front of it or after it. Although I finished, I was not happy with the work. I'm still hungry, although I finished my lunch.
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Yes, I can start a sentence with "Is."
No particular words start a complex sentence. It is a sentence with a major idea and a minor idea included as well, without a compounding word like " and " or " but " to join the main and the subordinate ideas.
Yes, you can start a sentence with a verb.
Yes, you can start a sentence with an acronym.
They were happy although they were poor.
You can start a sentence with "Also"