What´s the difference between... " SO MUCH" - "TO MUCH " "LONG" - "LARGE" "BETWEEN"- "AMONG"

My day Today supposed to be a beautiful day, but everything comes out in a wrong way. Maybe i should accept the things that i can´t change, anyway " everything happens for a reason, and if it doesn't happen it most be for a reason too".

Past simple. If i want to ask a question in a negative way, what is the correct form to do it? , using verb to be. Were you not in Italy? weren´t you in Italy? Was he not in Italy? Wasn´t he in Italy? TRhank you so much

what´s the correct use of Do? Do you like it? I do love you. In this case we have two verbs in the same sentence, so .. my question is, Why do you put two verbs in the same sentence? Is "Do" an auxiliary?

When I use "DID". Should I put the verb in past simple? Wht´s the correct use of did? Did I told you? or Did I tell you? I hope you can help me with this. Thank you.

What´s the difference between might and could? I found this examples, but i really dónt know how to use this two verbs on a second conditional sentence. If i won the lottery. I could buy a car. If I won the lottery . I might buy a car.

When I use second conditional in English using WAS/WERE? When I use second conditional in English using WAS/WERE. What is the right form to use this verb? I found some examples: If she were happy in her job, she wouldn't be looking for another one./ If I were you, I'd look for a new place to live./If he were coming, he would be here by now. Note that after I / he/ she /it ,they wrote the subjunctive form 'were' and not 'was'. That´s confused me.