一般现在时。（do/does, am/is/are, 情态动词）
一般现在时表示的是客观事实或平时反复做的事情通常有频率副词always，usually，often，sometimes，seldom，once a week，every day等。
如：The earth goes around the sun.
Japan lies east of China.
He is never late for school.
He often gets up at six every day.
Cats can climb trees.
I hear they have moved into a new house.
He writes to his father once a year.
一般现在时还可以表示、安排好的，或即将发生的事，通常使用瞬间动词come，start，begin，return，leave等。
如：My plane leaves at 6:00 a.m..
Is there any meeting today?
The game starts at 8:00.