By Negatives, Singular nouns

I have gone through a lot of the old posts on the topic any. This is my understanding of any usage. Any can be followed by a plural/uncountable/singular noun. 1. When any is used in interogative or negative form, it is usually followed by a plural/uncountable noun. Does it mean that the verb...

"Some" is generally used for affirmative statements. 1. I'm going to buy some stuff at Costco. 2. There's some dirt on the carpet. 3. We had some people over for dinner last night. 4. There are some guests complaining about the service. "Any" is generally used in negative statements. 1. I'm...