13　Feeling blue 感到无精打采

　　Feeling sad or depressed

　　Example: She’s feeling blue, because the man she loves is far away。

　　14　Get to the bottom of something 弄清真相

　　To find out the truth about something

　　Example: I’m trying to get to the bottom of why David left without saying goodbye。

　　15 A piece of cake 轻松的事

　　Something which is very easy to do

　　Example: Here…let me put the batteries in for you. It’s a piece of cake。

　　16　Pay a call 拜访

　　To visit somebody

　　Example: As we’re in this neighborhood, we might as well pay the Jacksons a call, we haven’t seen them for ages。

　　17　By chance 偶然， 意外的

　　Unexpectedly; with no prior planning

　　Example: By chance, I bumped into my wife in the shopping mall

　　18　Round the clock 夜以继日的

　　To do something continuously, without a break or pause

　　Example: The ambulance services worked round the clock hauling people trapped in the building to safety。

　　19　Keep one’s cool 保持冷静

　　To stay calm in a difficult situation

　　Example: If the traffic is jamed, the only thing to do is keep your cool, or get out of the car and walk!

　　20　In a tight corner 处于困境

　　In an extremely difficult situation

　　Example: Whenever I get into a tight corner, I try to rely on quick thinking to get out of it。

　　21　Keep in the dark 隐瞒

　　To keep something secret

　　Example: We know my brother has a new girlfriend, but he's keeping her name in the dark。

　　22　Fall on deaf ears 不加理睬的， 不听取

　　Not to take any notice of what is said

　　Example: The city council’s order that garbage should be put in the bins fell on deaf ears; the sidewalks are still littered with trash!

　　23　Take things easy 放轻松

　　To relax

　　Example: It's better for our health to take things easy than to worry about problems all the time。

　　24　Eat like a horse 吃得很多

　　To eat a lot; to have a very big appetite

　　Example: Fred eats like a horse. When I was a growing lad like him, I used to eat a lot, too。

　　25　Catch one’s eye 吸引某人注意

　　To attract somebody’s attention

　　Example: A movement behind the curtain caught my eye – I thought it was a burglar and rushed out of the room!

　　26　Have an eye for something 对某事(某物体)了解得非常清楚

　　To be very good at doing something, or have a great understanding of something。

　　Example: As a botanist, he has to describe and draw plants accurately, so he must have an eye for detail。

　　27　Turn a blind eye 。熟视无睹

　　To ignore an action, even though one should do something about it

　　Example: Parents will spoil their children if they constantly turn a blind eye to their bad behavior。