Every Often Always Usually Sometimes Now and then In the morning 现在的特征或状态 The boy is always ready to help others. 普遍真理 The earth goes round the sun. 在when, until, before, if等从属连词引导的状语从句里,主句用将来时态,从句用一般现在时 I shall come to help you if am free tomorrow. 只用于一般现在时的表示状态和感觉的动词 Be, love, like, want, hope, suppose, need, prefer wish, know, find, feel, understand, believe, guess, hea