For example:- It was cold. I wore a coat. Both sentences are valid on their own, but they can be written so that they're obviously linked; "It was cold, so I wore a coat." The three most used coordinating conjunctions are and, or, and but. The coordinating conjunction and usually expresses addition or combination. For example:- I attended the meeting. + My friend attended the meeting. = My friend and I attended the meeting. The coordinating conjunction but expresses a contrast. We were tired. + We were happy. = We were tired but happy. The coordinating conjunction or expresses choice. For example:- Would you like tea? + Would you like coffee? = Would you like tea or coffee? There are two negative coordinating conjunctions: neither and nor. For example:- She spoke neither German nor French. ("nor" must always be part of the "neither ... nor" construction).