Guiding questions: present time

What adverbA part of speech that modifies verbs, adjectives, adverbs and conjunctions. E.g.: I could hardly utter a word. ("hardly")s of frequency do you know?
What is a general truth?
What is a temporary habit?
What is a stateA condition that exists at a particular time. E.g.: I am sick. This melon weighs two kilos. verb and an eventA general term expressing that somebody or something does something or that something happens. E.g.: An apple fell on Isaac’s head. verb?
Which two timeA concept which is related to our perception of reality; that part of existence which is measured in seconds, minutes, hours, days, weeks, etc.s does the present perfectThe aspect expressing completion. E.g.: He’s finished university. tenseA grammatical category that is marked by verb inflection. To express when an event or action happens in time or when a state exists, we use tenses. connect?
Why are these tenses called present perfect if they can refer to actionA general term expressing that somebody or something does somethings happening in the past?
What is the difference between the perfect and the perfect continuousThe aspect expressing duration, formed with be + verb-ing. E.g.: What are you doing? aspectA verbal category relating an action to the passage of time. It can express duration or completion.?
When do we use for and when since with the present perfect tense?

Grammaring