lost my nerve

• v. 变得胆怯(不知所措)

lost my nerve的用法和样例：

例句

1. I want to write an angry letter but I lost my nerve when I sat down to do it.
   我想写一封信出出气，但我坐下来写时又失去了勇气。
2. I wanted to write an angry letter to him but I lost my nerve when I sat down to do it.
   我原想给他写一封信出出气，但真的坐下来执笔时，却又没有勇气写了。
3. I was going to cross the stream on a fallen log but at the last minute I lost my nerve and went the long way round by the bridge.
   我想从倒下来的圆木上走过溪去，但最终我还是害怕了，兜了个大圈子绕道从桥上过去。