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.
In French, the present tense is used to talk about things that happen regularly or are happening now. French has regular and irregular verbs. The regular verbs follow a set pattern while irregular ...
There are other useful verbs in French that follow the same patterns as connaître and écrire. For more information on this, look at this guide on present tense regular verbs in French.