1. I eat cereal for breakfast.
2. I eat cereals for breakfast.
3. I eat cereal for my breakfast.
4. I eat cereals for my breakfast.
[Can we use all the expressions? Which expressions are common?]
2 answers
1 and 3 are fine. The others aren’t.
Cereals is plural. Do you eat more than one at a time? Number 2 is not used. Number one is best. Numbers three and four are correct, but we would most commonly use number one.