 Example (2) is a general statement that holds for most cats; it can be paraphrased as "Most cats like fish" (2').Example (3) is a statement that holds of some cats; it can be paraphrased as "There are some cats everywhere" (3').Example (4) is a statement that refers to the cat species as a whole; in other words, "The cat species is common" (4); even though that there is no single individual cat that has the attribute of being "common".