- used in the first person to indicate simple future time: I shall probably go tomorrow
- used in the second or third person, esp. in formal speech or writing, to express determination, compulsion, obligation, or necessity: you shall have to wait your turn
- used in the statement of laws or regulations: the fine shall not exceed $200
- used in questions about what to do: shall I invite them?
- used in formal conditional subordinate clauses: if any man shall hear, let him remember
Origin of shallMiddle English schal, plural schullen from Old English sceal, infinitive sceolan, akin to German sollen from Indo-European base an unverified form (s)kel-, to be indebted from source Lithuanian skeliù, to owe