First, "Paint it black." can only be a sentence as a command. In this case, it is and understood "you." (You) paint it black. I am telling you to do this. As far as I know, this is really an expression from the Rolling Stones

'If you do that any more I'll punch you, OK?' is common in my region. I would take that as the other sort of "any" plus "more," like "some more." "If you feed that dog any more food, he'll

The construction "We better go now" is now almost idiomatic in English these days. Is the omission of the "had" an example of ellipsis or some other process? "Had"? I have always thought that"would" is the