EXAMPLES FROM THE WEB FOR SHALL
Take it at once, and tell her I shall be up to see her presently.
Atropos has decreed that I at least shall never again enter her walls.
In a short time, I shall not have sufficient strength to impart all I have to say.
Where shall I find a quiet church where I may say his De profundis in peace?
I shall be staying with Aunt Cornelia a few days after to-morrow.
Tell Aunt Cornelia, please, that I shall be along in just a moment.
“He shall see me when it suiteth me,” said Mr. Headley coolly.
Then I shall have to put it out of your power to carry out your threat.
"I shall not interfere with that arrangement," said the lawyer, misunderstanding his object.
Two furlongs hence, and we shall be safe in the hostel at Dogmersfield.
Old English sceal, Northumbrian scule "I owe/he owes, will have to, ought to, must" (infinitive sculan, past tense sceolde), a common Germanic preterite-present verb (along with can, may, will), from Proto-Germanic *skal- (cf. Old Saxon sculan, Old Frisian skil, Old Norse and Swedish skola, Middle Dutch sullen, Old High German solan, German sollen, Gothic skulan "to owe, be under obligation;" related via past tense form to Old English scyld "guilt," German Schuld "guilt, debt;" also Old Norse Skuld, name of one of the Norns), from PIE root *skel- (2) "to be under an obligation."
Ground sense of the Germanic word probably is "I owe," hence "I ought." The sense shifted in Middle English from a notion of "obligation" to include "futurity." Its past tense form has become should (q.v.). Cognates outside Germanic are Lithuanian skeleti "to be guilty," skilti "to get into debt;" Old Prussian skallisnan "duty," skellants "guilty."