幸好我们带了伞。

___It’s ___just ___as ___well we brought an umbrella.

幸好你的火车晚点了，否则你就错过我们的电话了。

___It’s ___just ___as ___well your train was delayed, otherwise you would have missed our call.

幸好我在野餐前查看了天气预报。

___It’s ___just ___as ___well I checked the weather forecast before the picnic.