Day90 sidetrack

1）翻译下面的句子：

约翰本来想找一个信封，但没想到读起了一些旧时的信件。

John was looking for an envelope,but got sidetracked and started to read some old letters.

2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。

例子：It has become a norm that I tried to concentrate on my study but got sidetracked by some messages.

场景 ： 想要学习却被信息分神已经变成我的常态。