a dog’s life　潦倒的生活 
The man lived a dog’s life.这个人生活潦倒。　
A to Z　从头至尾 
I know that from A to Z. 我很了解这件事。 
above somebody　深奥 
Well,this sort of talk is above me.我不懂你们在讲什么。 
all ears 全神贯注地倾听着 
When you tell Mary some gossip,she is all ears.跟Mary讲一些小道消息，她会听地仔仔细细。 
all the more　更加，益发 
You’ll be all the better for a holiday.度一次假，对你会更有好处。 
all dressed up 打扮得整整齐齐 
She is all dressed up and nowhere to go.她打扮得整整齐却无处炫耀。 
all in all 总的说来；最心爱的东西 
The daughter is all in all to him.女儿是他的无价宝。 
all out 竭尽全力 
They went all out.他们鼓足了干劲。