because vs. for

[sb70012]

Hi,

As you know, the word "For" is sometimes used to have the meaning of "because".
But are their usage same?

For example:

I don't come to your home because you upset me yesterday. (self made)
I don't come to your home for you upset me yesterday. (self made)

Because you've done your homework, I will give you a gift. (self made)
For you've done your homework, I will give you a gift. (self made)

I really don't know if there is a difference between them. Do they have same usage? Can they be replaced by?

Thank you.

 

[5jj]

'For' seems to me to be very dated.

I used to tell my students that they should recognise this use of 'for', but never use it.

 

[sb70012]

'For' seems tome to be very dated.

I used to tell my students that they should recognise this use of 'for', but never use it.

Thank you 5JJ now I got it. Just one more thing, are the self made examples with "for" correct or not?

 

[5jj]

Thank you 5JJ now I got it. Just one more thing, are the self made examples with "for" correct or not?

The first just about works. The second doesn't. In modern English we cannot begin a sentence with 'for' (=because).