go on picnics/eat cakes

[kadioguy]

[This is a question about using singular or plural nouns]

(My sentences)

a. We like to go on a picnic when the weather is nice.
b. We like to go on picnics when the weather is nice.

[Presuming one cake at a time.]
c. I usually eat a cake after work.
d. I usually eat cakes after work.

For a habitual action, I think that (a) is incorrect while (c) works better than (d) (more clear in meaning). I don't know why.

[Edit: Changed "For habitual actions" to "For a habitual action".]

 

[5jj]

Both (a) and (b) seem OK to me.

If the speaker eats only one cake, then it's (c). If they eat more than one, it's (d).

 

[emsr2d2]

If it's irrelevant how many whole cakes or slices of cake are eaten each day, use "cake" uncountably.

I usually eat cake after work.