present tenses_AL31

Which present tense is used for general truth, and laws of nature?

Which present tense is used for an action which started in the past and lasted for some time?

Which present tense is used for an action that we have already arranged to do in the near future?

Which present tense is used for timetables (planes, trains, buses, etc) and programs?

Which present tense is used for an action which has recently finished and whose result is visible in the present?

Which present tense is used with adverbs always, constantly etc. for actions which happen very often, usually to express annoyance, irritation etc.?

Which present tense is used for an action which has happened within a specific time period which is over at the moment of speaking? We often use words and expressions such as today, this morning..

Which present tense is used to put emphasis on the duration of an action started in the past and continues up to present, especially with time expressions such as for, since, all morning...?

Which present tense is used for sports commentaries, reviews and narrations?

Which present tense is used for temporary actions; that is actions that are going on around now, but not at hte actual moment of speaking?

Which present tense is used for an action which happened at an unstated time in the past? The exact time is not mentioned because it is either unknown or unimportant.

Which present tense is used to give instructions or directions (instead of imperative)?