Verbs are words that refer to an action or event or that is used in describing or identifying things. An “action” is something you do. “Event” is more general than “action.” “Events” are things that happen, such as death. A linking verb (“is”) describes a condition of being.
A verb usually says something about someone or something. All of the example sentences above say something about John. “John” is the **subject** of those sentences. In English the subject usually comes before the verb.
Sometimes there is another person or thing associated with the verb. In the examples below, the bolded word is the verb, and the quoted phrase is the **object**. In English the object usually comes after the verb.
In some languages, a verb that needs an object must always take one, even if the object is not very important. People who speak those languages might restate the sentences above like this.
In some languages, the form of the verb may vary depending on the persons or things associated with it. For example, English speakers sometimes put “s” at the end of the verb when the subject is just one person. In other languages, marking on the verb may show whether the subject is “I,” “you,” or “he”; singular, dual, or plural; male or female, or human or non-human.
When we tell about an event, we usually tell whether it is in the past, the present, or the future. Sometimes we do this with words like “yesterday,” “now,” or “tomorrow.”
In some languages the verb may be a little bit different depending on the time associated with it. This kind of marking on a verb is called “tense.” English speakers sometimes put “ed” at the end of the verb when the event happened in the past.
In some languages speakers might add a word to tell something about the time. English speakers use the word “will” when the verb refers to something in the future.
When we tell about an event, sometimes we want to show how the event progressed over a period of time or how the event relates to another event. This is called “aspect.” English speakers sometimes use the verbs “is” or “has” then add “s,” “ing,” or “ed” to the end of the verb in order to show how the event relates to another event or to the present time.
* Mary **had cooked** the meat by the time John came home. (This tells about something that Mary completed in the past before something else happened.)