一般现在时（1）表示经常发生的或习惯性的行为或状态。常与always, usually, often, sometimes, at times, every day, on Sundays, never 等。1. My father gets up very early.2. Miss Smith teaches English. 3. Light travels faster than sound. 4. The students often do experiments in the physics laboratory.表将来行为 一般现在时要表将来的但已事先安排好的动作。这种安排很固定，不容轻易改变，多用于转换动词，如go, come, arrive, leave, start, sail等，往往后接时间状语。a. The train leaves at 9:00 p.m. b. The Browns arrive at 7 this evening. 1. After you take this medicine, you will feel better.2. As lon
