幸运的是，我们刚到家就开始下雨了。

___Fortunately, we got home before it started to rain.

目前，幸运的是，天气晴朗阳光明媚。

At the moment, ___fortunately, the weather is fine and sunny.

我丢了钱包，但幸运的是有人找到并归还了它。

I lost my wallet, but ___fortunately someone found it and returned it.