重点讲解：
1. try out
试验；测验；
eg. Why don't you try out for the basketball team? You have nothing to lose.
你为什么不去尝试一下参加篮球队，反正你也不会有什么损失。
eg. I'm always pleased to try out a new variety.
我一直乐于尝试新产品。
2. every now and again
时而；有时；
eg. It's a good idea to lift your head and take a look around every now and again.
不时的抬起头来看看周围的情况是一个好主意。
eg. Every now and again she went upstairs to see if he was still asleep.
她时而到楼上看看他是否还在睡觉。
3. have a lot on one's plate
有很多工作要做；有很多事要处理；
eg. The Americans have a lot on their plate just now.
美国人眼下还有很多的事情要进行处理.
eg.I have a lot on my plate.
我还有许多该做的工作.
4. have nothing to do with
与……无关；
eg. House prices are easily upset by factors which have nothing to do with property.
房价很容易受到与房产毫不相干的因素的干扰。
eg. They advised me to have nothing to do with him.
他们劝我不要和他有什么联系。
5. in no time at all
立刻；马上；
eg. They finished the work in no time at all.
他们立刻完成了这项工作。
eg. In no time at all the whole sky was lit up.
整个天空马上被照得通明。
