first thing

• adv 一大早 I'll phone you first thing

first thing的用法和样例：

例句

1. I don't know the first thing about the traffic accident.
   这起交通事故我一点儿都不知道。
2. The first thing he does after getting up is to make the bed.
   他起床后的第一件事就是整理床铺。
3. The first thing that we did when we conquered the town was to haul down the enemy's flag and raise our own.
   我们占领这座城市以后以后所做的第一件事就是降下城里敌人的旗帜，升起我们自己的旗帜。
4. The first thing that struck me was the numerous charts that covered the walls.
   首先给我留下深刻印象的是墙上有大量图表。

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词汇搭配

• not know the first thing about something 什么也不知道,对某事...
• first thing off the bat 马上