It is sunday today ,he goes for a picnic这句话为什么不用过去式?

问题描述:

It is sunday today ,he goes for a picnic这句话为什么不用过去式?

如果表示他去了没去的状态,用过去时.例如:It is Sunday today,I saw he went to picnic in the morning.今天是星期天,我看见他去野炊.如果表示他今天的计划干什么,用一般现在时,或现在进行时.例如It is Suday today...