1. He did much to help the homeless. 2. He did nothing to help the homeless. Do both " to help the homeless" function as an adverbial of purpose? Or the first does, but the second functions as an attributive? 两个句子中的不定式短语都是目的状语吗？还是说第一个是，而第二个是后置定语？

Which one is natural? I'm offering something to eat, etc. If I say; If you refuse, or I'll be offended. If you refuse, and I'll be offended

What‘s your name？  

Which one is OK? He was lying to me the whole time we dated.. He was lying to me the whole time we were dating.

Which one is OK? It's a pity you don't stay. It's a pity you're not staying.

Can I use these interchangeably? He turned out he's married. He turned out to be married.

HELLO ALL OF YOU I WISH I CAN FIND SOME FRIENDS HERE. I WANT TO PRACTICE MY ENGLISH