Using different tenses When you are writing, you can use words that show if the events have already happened, are happening now or will happen in the future. The past tense is used for things that ...

In your scientific paper, use verb tenses (past, present, and future) exactly as you would in ordinary writing. Use the past tense to report what happened in the past: what you did, what someone ...

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.