In my opinion its difficult to say, when the different phases of a game start and end, because every game is different. In the laning phase, when you have bought your items, you go to your duo lane and try to farm(make lasthits) much as possible and try not to die, when the enemy jungler ganks. Try to poke your enemies(follow e.g. stuns from your support) and go only allin, when you are the opinion you can kill with your support or alone the enemy adc.
Try to focus the adc/hunter, sometimes its better to focus the supporter, when he is very low or the adc is very passive. When the jungler comes for a gank, you should follow, because here is the highest chance to kill the duo lane.
When you cant kill your enemies, try to force them to fallback to base and get the tower.
As I said, be careful of ganks. You can protect yourself with Ward
s. Usually the supporter buys the most Ward
s or only the Ward
s for the duo lane, but dont flame when the supporter doesnt buy Ward
s and you are dead, when you get ganked. You should then buy Ward
s for you yourself.
In mid-game are probably some towers down and you try to produce more pressure on enemy side. That means you invade their jungle, place Ward
s, try to get more objectives like tower or gold fury and catch people.
Also you try with your (part of)team to initialize a teamfight. Won teamfights means you get more objectives, more gold and more buffs.
In this phase you should build items which depends of the builds from the enemies. React what there are building and prob take look of champions/gods, who can oneshot you.
Dont forget to push your lanes and dont give objectives for free.
In the late-game you should have a full build or only one/two item are missing, when you arent behind ;) Your deathtime becomes longer and longer, buffs like fire giant become more important.
Its important to make the right decisions, because you have an important role. E.g. you push your lanes and the enemy team try to catch you and kill you. The consequence is, that they can fight 4vs5 without the adc, get the fire giant and destroy a phoenix or maybe the worst case they end the game.
Like in the mid-game and more in the late-game are the teamfights. Its important to know, where the adc/hunter has to stay in the fights and what positioning means.
Positioning means, that enemies comes in struggle to catch you and you can do dmg much as possible. Stay behind your frontline the tanks like supporter/jungler/sololaner. Safe your escape skills like
and use your actives like purification.
When the enemies focus is right, they will focus you and the other main dmg dealer in the teamfights. So look out.