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how to distinguish because 、as 、since [Copy link] 中文

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Post time 2004-10-19 21:01:12 |Display all floors
请问如何辨析这三个表原因的连词 because  、as 、since,请给出详尽解释及例句。另外请推荐一本全面详尽的同义词辨析辞典。i'm waiting for your kind reply on the line . Urgent!

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Post time 2004-10-21 17:04:06 |Display all floors

Some general rules

Because --- Use when you want to describe a reason for something.
Example --- I didn't go to school yesterday because I was sick.

Since --- Use when you want to talk about things related to time.
Example --- Since the bus is late, lets get a snack while we wait.

As --- Use when you want to talk about similar things or to compare things.
Example (similar) --- I like bananas as much as I like apples.
Example (compare) --- I don't like oranges as much as I like apples.

It is possible to interchange these three words with each other, depending on the sentence structure, so these are just simple guidelines.

Since I was sick yesterday, I didn't go to school.
Lets get a snack as we wait for the bus.

You could replace "as" with "while" also".
Lets get a snack while we wait for the bus.

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Post time 2004-10-22 13:25:29 |Display all floors

how to distinguish because 、as 、since

study!

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Post time 2004-10-23 23:05:16 |Display all floors

let me try

because 、as 、since can be used exchangably.
Because 在回答whY提出的问题时, 其他AS,SINCE 不可代替。

SINCE: 既然,
Eg. Since you are here, let  us get started.

AS;表示人所共知的原因:
eg. As you know, I am depressed now.
       As China is a developing country, we .............../

Hope  they  help in some way.

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