1. WOULD DO WELL TO DO SMTH - used for advising that someone should do something; хорошая замена для заезженного should
e.g You’re still only a junior employee in this business, and you’d do well to remember that.
2. IT/THAT WILL NEVER DO - said when you think that something should not be considered acceptable; "это неприемлемо"
e.g. That will never do to abuse a child like that!
3. WILL DO - used for saying that something is enough or is suitable for a particular purpose; если хоти сказать, что что-то "сойдет", "и так нормально"
e.g. If you haven’t got a proper bandage, any strip of clean cotton or linen will do.
4. WHAT'S DOING? - used for asking what events are taking place;
e.g. So what’s doing back in the village these days?
5. THAT WILL DO - used for telling someone, especially a child, to stop talking or behaving badly; "довольно!"
6. THAT'S DONE IT - used when something goes wrong for saying that you are going to be in trouble; "все пропало"
e.g. Well, that’s done it. There’s no way we can stop him finding out now.
7. THAT DOES IT - used for saying that someone or something that has been annoying you has finally made you so angry that you will do something; "с меня хватит"
e.g. That does it! I’m calling the police.
8. DO ONE! - used for telling someone to go away;
e.g. When you ask for a refund they tell you to do one.