One’s tense will vary depending on what one is trying to convey within their paper or section of their paper. For example, the tense may change between the methods section and the discussion section.

Woman in red cardigan: People do get their tenses of a verb confused. Making sure that the verb is in the same tense all the way through a document or a letter or an email. If you read it to yourself ...

Modal verbs, which express a likelihood, ability, permission, request, order etc., usually help main verbs to state the future. It is the reason they are categorised as auxiliary verbs in the context.