all over　全部结束；浑身，到处
Glad,it is all over.这事全部结束了，好得很。
I'm wet all over.我浑身都湿了。
all set　准备就绪
He is all set for an early morning start.他已做好清晨出发的一切准备。
all you have to do 需要做得是
All you have to do is to calm yourself down and wait for the good news.你需要做得是静下心来等好消息。
as easy as falling of a log /as easy as snapping your fingers /as easy as ABC 容易得很
To me,a good story teller,it would be as easy as falling of a log.
对我来说，讲个故事还不是随手拈来。
as busy as a bee 非常忙
Mum is always as busy as a bee in the moring.妈妈每天早上都忙得不可开交。
at one's fingertips　了如指掌
How to get at that little island is at his fingertips.他知道怎么去那个小岛。
at one's wit's end　智穷
Don't ask him.It is also at his wit's end.不要问他了，他也不知道。