28th
Co-ordination
From A pervert’s guide to good grammar:
Coordinate sentences can look a few different ways, but they always need to have at least two independent clauses in them. That’s what makes them coordinate: all the independent clauses are equal in importance (like Tilda Swinton’s boyfriend and baby-daddy).
You can have coordinate sentences joined by any one of your seven magic words (For, And, Nor, Or, But, Yet, So) and a comma. They might look like any one of these:
For: Causality where clause 2 causes clause 1 (or clause 1 is the effect of clause 2)
Tilda is fucking Sandro, for John is watching the twins.
And: Additional information
Tilda is fucking John, and Sandro is watching.
Nor: Negative additional information
Neither is Tilda fucking John, nor is she fucking Sandro.
But: Contrast
Tilda is fucking John, but Sandro isn’t watching.
Or: Indicating choice
Tilda might fuck John, or she might fuck Sandro.
Yet: Indicating time, or additional info with slight negative
Tilda is fucking Sandro, yet John can’t be bothered to notice.
So: Indicating causality where clause 1 causes clause 2; also indicates purpose
Tilda is on a plane to New York, so she can fuck me.
Yay! People defending good grammar make me happy, and they give me hope, especially when it’s about Tilda Swinton and fucking. (However, comma is optional when “so” is short for “so that”, ahem.)

