Tense refers to the time frame in which an action takes place

1. There are three main tenses in English: past, present, and future.

1. Past tense refers to actions that have already happened.

1. Present tense refers to actions that are happening now.

1. Future tense refers to actions that will happen in the future.

Verbs are used to indicate tense. The base form of the verb is used for present tense, while the past tense is indicated by adding 

1. There are also four additional tenses in English: past perfect, present perfect, future perfect, and future continuous.

1. Past perfect tense refers to actions that were completed before a specific point in the past. It is formed using the auxiliary verb "had" with the past participle of the main verb.

Future perfect tense refers to actions that will be completed before a specific point in the future. It is formed using the auxiliary verb  

Present perfect tense refers to actions that started in the past and continue up to the present.  

Future continuous tense refers to actions that will be in progress at a specific point in the future. It is formed using the auxiliary verb  

1. It is important to use the correct tense in a sentence to accurately convey the time frame of the action being described.