shall(should)和will(would) 的用法

(1)shall(should)用于第一人称的将来时中，单纯表示来

  I shall think it over.我要好好考虑一下。

  When shall I see you again?我何时再见到你?

  I rang up to tell her that I should leave for London. 我打电话告诉她我要去伦敦。

  (2)will用于第二、第三人称的将来时态中，在现代英语中可以用于所有人称

  He will be 30 next month. 他下月将是30岁。

  You will have an English test tomorrow.明天你有英语小测验。

  He wanted to know when you would finish the writing.他想知道你何时完成写作。