一般现在时 主要描述经常会发生的动作、状态或不变的真理。 句末常出现every day/week/year/Monday , in the morning;句中常有always, usually, often, sometimes 组成 1.主语+be+名词(形容词) I am a student. He is tall. 否定句:在be 后加not I am not a student. He is not tall. 疑问句:be 动词提前到第一位。 Are you a student? Yes,I am./No,I am not. Is he tall? Yes,he is./No,he isn’t.