最佳答案
1)介词at, in和on不仅表示地点,也表示时间。如:Many tourists come here in autumn. They usually come in Julyand in August.许多旅游者夏天到这里来。他们常在7、8月来。还可以用approximately, about, around, round, round about等词与介词连用来描述近似的时间概念。如:The accident happened at approximately 6:00 a.m.事故大约发生在早晨6点。