:::warning # TENSE USAGES EXAMPLES ::: :::info __PRESENT PERFECT vs PAST SIMPLE__ ::: :::warning __PRESENT PERFECT:__ Action that is complete at the time of speaking: - I've studied 3 sections __until now.__ - I've __already__ done half of the exercise. - He has driven 500 kilometres __so far.__ ::: :::warning __PAST SIMPLE:__ Action completed at a specific time in the past: - I studied 3 sections __last night.__ - I did half of the exercise __before lunch.__ - He drove 500 kilometres __yesterday.__ :::