providing that的用法和樣例：
例句
- I shall go provided that it doesn't rain.
假如不下雨我就去。 - I will come home providing you come with me.
假如你和我一起走，我就回家去。 - If that chair is occupied, a three-way conversation about the book ensues.
倘若有人坐，則三方會談由此而生。 - Given the condition of the engine,it is a wonder that it even starts.
倘若這發動機能發動的話，可真是不可思議。
