原因状语从句

* I bought the house because it was large. 我购买了这房子，只是因为它面积大。
* As she was ill, she didn't come to the party. 由于病了，她没来参加晚会。
* We didn't know what to do as we were just visiting there. 我们不知道该怎么办，因为当时我们仅仅在那里访问。
* Since it is so hot, let's go swimming. 既然天气这么热，我们去游泳吧。
* Since everyone is here, let's start. 既然大家都在，我们就开始吧。

【高中以上】
* Seeing (that) it is 10 o'clock, we'll wait no longer. 由于时间已到十点，我们不能再等了。
* Considering the weather, we got here quite quickly. 由于天气，我们来到真够快。