I. We can use 'some' and 'any' with plural countable noun. In general use 'some' in positive sentences and 'any' in negative sentences.
a. use 'some' and 'any' in questions. We use 'some' to talk about a person or thing that we know exists, or we think exists. (e.g. Are you waiting for somebody? (I think you are waiting somebody))
b. We use 'some' in questions when we offer or ask for things. (e.g. Would you like something to eat? (there is something to eat))
c. But in most questions, we use 'any'. We do not know if the thing or person exists. (e.g. I can't find my bag. Has anybody seen it?)
I1. Often use 'any' after 'if' (e.g. If there are any letters for me, ~. I'm sorry for any trouble I've caused. (=if I have caused any trouble))
a. We use 'any' with the meaning it doesn't matter. (e.g. Come and see me any time you want.)
I2. Somebody, someone, anybody, anyone are singular words. But often use they/ them/ their after these words. (e.g. If anyone wants to leave early, they can. (= he or she can))
I3. We can use 'some' and 'any' without a noun. (e.g. I don't have any problems but Bob has some. (some problems))
Today's Idiom:
loose cannon: An unpredictable or uncontrolled person who can cause damage if not kept in check
Example: As it turned out, John is not just a loose cannon, but he makes sense.