Shall

Shall is used in many of the same senses as will (see above), though not all dialects use shall productively, and those that use both shall and will generally draw a distinction (though different dialects tend to draw different distinctions). In standard, perhaps old-fashioned, British English, shall in the first person, singular or plural, indicates mere intention, but in other persons shows an order, command or prophecy: "Cinderella, you shall go to the ball!" It is, therefore, impossible to make shall questions in these persons. Shall we? makes sense, Shall you? does not.

Shall derives from a main verb meaning to owe, and in dialects that use both shall and will, the former is often used in instances where an obligation, rather than an intention, is expressed.