'For' vs 'because' vs 'since'

[Infin1ty]

Hi there, :)

I have a question about the difference between 'for', 'because' and 'since' when they are used to express why something happens. Would you tell me when to use them and why? Below are my sentence. The original sentence is "for the magzine..." and was written by a native speaker. The others are modified by me. Are they correct?
Thanks in advance. :)

The editor was getting impatient, for the magazine would soon go to press.

The editor was getting impatient, because the magazine would soon go to press.

The editor was getting impatient, since the magazine would soon go to press.
_________________
Please feel free to correct me if you find any mistakes in my posts.

[Cerberus™]

They are all correct and mean the same. There are highly subtle differences, you could look them up in an online dictionary. "Since" is used rather when the author presents the reason as reasonable to objective standards, not just to the person in the story who is acting on this reason.

[Cerberus™]

Or you could say "because" is neutral; "for" is the same but somewhat literary/formal and cannot be used at the start of a sentence; "since" is used with information that the speaker/writer considers already known and agreed upon by the reader/listener; "as" may also be used, but only to remind the reader/listener of something, not as an actual cause or reason in argumentation; otherwise it is considered by most artificial.

[Infin1ty]

Thank you again, Cerberus, for your kindness, and also for your detailed explanation. :) Wish you have a nice day!
_________________
Please feel free to correct me if you find any mistakes in my posts.

[Anna.ha]

You see.

On the grounds or basis of; by reason of: well-off by virtue of a large inheritance

There is no 100% exact synonym for "because", but there are words and phrases which are very close in meaning. These include:

"as" - this is less definite than "because" but gives the same general idea, eg "I stayed at home as it was raining."

"since" - similar to "as" with the idea of "taking into consideration" eg "Since you have done the work, we will pay you for it."

Other phrases have roughly the same meaning but are grammatically different. These include:

"due to" eg "We cancelled the picnic due to the bad weather." You could also say "because of the bad weather." However "due to" has a more formal sound and can only be used with a noun (eg you can't say "due to the weather was bad."

Hope this helps.

[Infin1ty]

Thank you, Anna. Your detailed explanations really help me alot. Thanks! : )
_________________
Please feel free to correct me if you find any mistakes in my posts.