实战口语情景对话 第291期:Cleaning 清洁工作

重点讲解：
1. first of all
首先；最初；
eg. First of all, you should know what profession suits you.
首先，你该知道什么职业适合你。
eg. First of all she just smiled, then she started to laugh.
最初她只是微笑，后来才放声大笑。
2. from time to time
不时地；间或；偶尔；
eg. Her daughters visited him from time to time when he was ill.
他生病的时候她的女儿们时常去探望他。
eg. From time to time,she gave him an encouraging nod.
她不时对他点头鼓励。
3. for sure
无疑；肯定；
eg. Even to this day we don't know what happened for sure.
即使到现在我们也不确定究竟发生了什么。
eg. Well, we can't cut the research budget, that's for sure.
嗯，我们不能削减研究的预算，这是肯定的。