1、表示经常发生的动作、存在的状态和现阶段的习惯
常用的时间状语有:often, sometimes, usually, always, seldom, in the morning, every day, on Sunday 等。如:
He is always ready to help others.
The students have sports at five every afternoon.
Does he work hard?
2、表示不受时间限制的事实或普遍真理
Three plus two is five.
A plane is faster than a car.
China is in Asia.