class begin还是begins

1.如果老师对学生们说：“上课”，就是：Class begin，这是个祈使句，所以不加s；2.如果描述课程开始，则要加s，如：class begins on time.

class begin例句

A:When does your class begin?

几点上课？

How does a class begin there?

What time does your class begin? It begins at eight-ten.

你的课几点开始？八点十分开始。

class begins例句

In this term, environmental protection English class begins.

这段教材，就是我们环保英语五十句的第一课。

Test the students before the class begins.

课前先测试学生。

The first class begins at 7:50 am.

第一节课于7点50分开始。