+60. The Future Tense.+—The future tense is formed by combining shall or will with the root infinitive, without to.
The correct form of the future tense in assertions is here given:—
SINGULAR PLURAL
1. I shall fall 1. We shall fall 2. Thou wilt fall 2. You will fall 3. He will fall 3. They will fall
Will, in the first person, denotes not simple futurity, but determination: [I will (= am determined to) go].
Shall, in the second and third persons, is not simply the sign of the future tense in declarative sentences. It is used to denote the determination of the speaker with reference to others.
Notice:—
1. In clauses introduced by that, expressed or understood, if the noun clause and the principal clause have different subjects, the same auxiliary is used that would be used were the subordinate clause used independently: [I fear we shall be late. My friend is determined that her son shall not be left alone].
2. In all other subordinate clauses, shall, for all persons, denotes simple futurity; will, an expression of willingness or determination: [He thinks that he shall be there. He promises that he will be there].
3. In questions, shall is always used in the first person; in the second and third persons the same auxiliary is used which is expected in the answer.