the usage of "for "

[QingqingW554]

Dear instructor,
i have a question.that's why"for" is a coordinate conjunction as mentioned in Manhattan SC book.....i always deem that "for" is partly comparable to "because", a subordinate conjunction.

Could you give me some explanation about this ? or some examples?

[tim]

There is no need for explanation or examples. You had an incorrect understanding of what "for" represents in this context, and now you know the correct usage. Now use the correct usage (what you read in the book) instead of the incorrect usage (whatever you thought was true before you read the book)!

I will mention that in a practical sense, both approaches achieve the same result: requiring an independent clause on either side of the comma.