引导原因状语从句的连词

　　主要的有because, as, since, seeing (that), now (that), considering (that) 等：

　　He couldn’t got to school because he had a cold. 他因患感冒而未能去上学。

　　Since everybody is here, let’s begin our discussion. 大家都到了，我们就开始吧。

　　Seeing that it is 8 o’clock, we’ll wait no longer. 由于时间已到8点，我们将不再等了。

　　Now that you are here, you’d better stay. 你既然来了，最好还是留下吧。