I want to. I haven't paid for your dinner for a long time.
我要做。我好久没帮你付吃饭的钱了。
He is supposed to be there on time.
按理说他应该准时到那儿。
Most of us are able to solve most of our problems. Often, all we need is a good friend who will listen to us while we talk things through. If friends can take turns to listen to each other well, life will be better!