our maths teacher has _______ Australia for a week.a.gone to
our maths teacher has _______ Australia for a week.a.gone to b.been in c.arrived in d.been to
疑问是 has gone to 怎么用?go不是终止性动词吗?为什么会有完成时的形式?我看说 has gone to 是表明去了某地还没回来,has been to 是曾经去过,现在已经过来了,那么这里has been in 举几个例子,