Some problems with English modal verbs

1. Modals and their Illocutionary Force.

   1. Q: Shall we dance? (A: *We shall.) (or) Let's! (or) "Okay!"

   2. Shall I go ahead and book your ticket now? (A: *You shall) vs. Yes, please do.

   3. * Shall he dance?

   4. Will you be paying for this with a credit card? (A: I will.)

   5. *Shall you be paying for this with a credit card?

   6. I shall have to report this to the authorities.

   7. We shall see about that!

2. More examples of modal quirkiness:
   1. I really shouldn't (oughtn't to) have any dessert (but I in fact will/am gonna/*am sposta.)

   2. *I really have to not have any dessert...

   3. You must not eat or drink anything but liquids for 24 hours.

   4. You should/must/have to/had better/ do it.

   5. You don't have to pay in advance; in fact you shouldn't/better not/mustn't...

   6. You mustn't take any solid foods for 24 hours; in fact you *shouldn't/ better not.

   7. I better go now; in fact I *should / really hafta get a move on.

   8. I gotta go now; no you don't (*gotta go) hafta.

   9. I hafta go now; (no, you don't hafta(?).)

   10. I'm supposed to [sposeta] turn this in somewhere; (but I don't know where.) (*No, you don't sposeta.)

   11. I should really be going now, but I really don't feel like it/don't think I will. (No, you shouldn't.(?))

   12. Etc.