In present simple, 'always' indicates repeated actions or states. She always does her homework. I am always hungry in the morning. It can also be used with present continuous to show that the repeated action is annoying (from your point of view). You're always watching TV. [The speaker thinks this is a bad habit] He always sings that song. [this is just a statement of fact] He is always singing that song. [you don't like the song or he is a bad singer] With present perfect, 'always' is used to indicate the period of time. It is like saying 'for all of my life'. We often would use 'for' or 'since' to say how long something has been happening. 'Always' just means for the whole time (usually someone's life - since they were born). I have lived in that street for three years. I have lived in that street since 2009. I have lived in that street since I was born. I have lived in that street for my whole life. I have always lived in that street.