lost my nerve的用法和樣例：
例句
- I want to write an angry letter but I lost my nerve when I sat down to do it.
我想寫一封信出出氣，但我坐下來寫時又失去了勇氣。 - I wanted to write an angry letter to him but I lost my nerve when I sat down to do it.
我原想給他寫一封信出出氣，但真的坐下來執筆時，卻又沒有勇氣寫了。 - 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.
我想從倒下來的圓木上走過溪去，但最終我還是害怕了，兜了個大圈子繞道從橋上過去。
