我们用 “as” 和 “since” 来强调事情的结果。 I hope Tom's brought that comic as I wanted to borrow it from him. Noodles are popular, since they're easy to cook. “As” 和 “since” 引导的从句也常用于句首，注意不要忘记在从句后加逗号。 So, as our ...

On the other hand, 'since' is used to describe when an activity or a situation began. For example, I can say 'I have been recording this video since 10 o'clock'. So, remember 'for' is used to describe ...