Next thing sounds fine. I think you have a typo in the sentence before it, the word out should be put, “put sugar”.

Most of the “a” words have the accent mark on them and they should not.

Often we say someone is “holding us up” when they are slow getting ready to go somewhere. This could be used for life in general too, someone is “holding us up” and keeping us from our goals. “Tie me down” is often used in the expression “I don’t want to be tied down to just one person”, meaning no committed relationship. So in the song, the lyrics indicate that he does want to the person to “hold him up” or stay with him because he is not going anywhere. “Tie him down” means he wants to stay in the relationship. Others may have more to add, hope this helps.

“It’s my pleasure” is a response. “It’s been a pleasure” is a statement that can just be said to someone, as already mentioned it is usually used when leaving.

I am American and yes, we use that. The example is good. If I am trying to sell you a car, I will try to find out how much you want to spend without just asking. I might be hoping I can get you to spend more!

Well, la de da for you!

It means “will improve” or “will get better”.

1-4 look good to me. A teacher might have more to add. 5. (Present) She acts as if she IS a man. 6. (Future) She will act as if she IS a man.