Stank
The verb in this sentence is "seems."
Sour is an adjective (sour milk), a noun (whiskey sour), and a verb (their friendship soured over time).
The word 'sour' is a verb (sour, sours, souring, soured), an adjective (sour, more sour, most sour), and a noun (sour, sours). Example uses: Verb: Your milk will sour more readily if you keep it in the door of the refrigerator. Adjective: The sour cherries make excellent muffins. Noun: I'll have a whiskey sour please.
Yes, this is past tense.
smells awful
Generally, you wouldn't when you are using it as an uncountable noun. It is more correct to count the containers, such as three glasses of milk. If you use milk as a verb, then yes, it is proper to say milks as a singular verb. Example: "John milks the cow each morning."
The word "sour" can function as both an adjective and a verb. As an adjective, it describes something having an acidic taste or unpleasant smell. As a verb, it refers to the process of becoming sour.
The verb in the sentence "Without sugar, the blueberries were too sour for the dinner guest" is "were." It indicates the state of the blueberries, describing them as being too sour.
Depending on the context, correct is already a verb. For example, the action "to correct someone" or "to correct spelling" is an action and therefore a verb.
The correct verb would be "did inform."
done is a verb but the correct verb is did - he did.
Go milk the cow.