classes begin 和classes are begin的区别是什么?

classes begin可不可以写成 begin the classes "class begin"还是"classes begin"? Classes begin at eight. classes begin begin要不要加s? Classes over和Classes are over的区别 Classes begin ______seven fifty -five. classes begin at ...和class begins at ...它们有什么区别? begins class和classes begin为什么加s? our classes begin at 8:00 a.m 的同义句是什么? 用适当的介词和副词填空 1.Classes begin ( )about 8:00.2.People usually e Our classes begin at 8:00a.m.的同义句____ _____our classes at 8: Our classes begin at 8:00.这里的 begin可以换成start吗?