如何辨析because、as和since

1 “because” 比 “

as

1

” 和 “

since

2

” 更常见。我们用 “because” 来强调事情的原因。

i'm tired because i didn't sleep very well.

如果想要额外强调原因，可以将 “because" 引导的从句放在句首。

because my bed is

uncomfortable

3

, i'm getting a bad back.

2 “as” 和 “since” 比 “because” 更为正式。我们用 “as” 和 “since” 来强调事情的结果。

i

hope

4

tom's

brought

5

that

comic

6

as i wanted to

borrow

7

it from him.

noodles are

popular

8

, 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 minute is up, i'll finish

recording

9

this video.