The reason

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#69363 Sun, 23 Jan 05 03:14 AM

Hello
I have a question about the expression of the reason.

#1 Yuki was very sleepy that day, because she had stayed up late the night before.

When we explain the reason of something, can I use " as / since / " instead of "because" ? I 'd like to know we can use them interchangeably or not.

Thank you.

Guest

Expressions

#69375 Sun, 23 Jan 05 04:44 AM

If you use "as" in place of because you will give the phrase a more formal connotation. "Because" is more common in spoken English. "Since" is kind of inbetween the two and would be more commonly heard in spoken English.

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