So these two mean the same?5. 'What types of food do you like?'
6. 'What types of foods do you like?'
Both OK, for the same reason- speaker is considering the nutrient material in (5) and the individual types in (6).
9. There are many reasons but I'm going to talk about the forth that matter.('Why isn't 'matter' plural?'-- because 'matter' seems to refer to one topic-- it is preceded by the singular demonstrative 'that' rather than the plural 'those'.)
I mean why doesn't 'matter' have a -s added to it? 'That' is singular so should't matter have a -s added to it? What is 'that' referring to?
I am trying to say this:
1. That kills him. (Correct)
2. That kill him. (Incorrect)
What do these mean?
3. Generation after generation
4. Generations after generations.
5. Generation after generations.
6. Generations after generation.