Level A2
Coordinating: and, but, or, so
I like tea and coffee.
I like tea and coffee. Here and adds the second drink to the first.
Forms
I like tea and coffee.— and adds: this one and the other one tooI like tea, but not coffee.— but contrasts: one yes, the other noTea or coffee?— or offers a choice: one of the twoIt was late, so we left.— so gives the result: that is why we left
A common mistake
Wrong: He doesn't smoke and drink.
Right: He doesn't smoke or drink.
A common mistake is He doesn't smoke and drink. After not we say He doesn't smoke or drink.
More examples
She called, but nobody answered.
Contrast again: She called, but nobody answered.
We can walk or take the bus.
A choice again: We can walk or take the bus.