I either pay the money immediately or they will take my car.
Either I pay the money immediately or they will take my car.
We can have either a sandwich or order a pizza.
We can either have a sandwich or order a pizza.
Use either…or to connect two choices. Put either immediately before the first choice and or immediately before the second choice.
In the first example, the choices are two complete clauses: ‘I pay the money immediately’ and ‘they will take my car’. Therefore, we say either I… or they…
In the second example, the choices are two actions: ‘have a sandwich’ and ‘order a pizza’. Therefore, we say either have… or order…
The words or groups of words after either and or should have the same structure.