A verb can point to different times. At this stage, recognize these three basic ideas:
TimeExampleMeaning
Past — ماضیكَتَبَhe wrote
Present — حاليَكْتُبُhe writes / is writing
Future — مستقبلسَيَكْتُبُhe will write
Later you will learn the forms and rules in detail. For now, just connect each form with its time.