摘要： 1.当你说一段时间从过去到现在，我们用完成时态。Have you ever been to Italy?Have you ever eaten Caviar?Have you heard from George recently?I've met a lot of people in last few days.2.我们用完成时和today, this morning, this evening, etc, 当这些时间还没有在说话的时候结束。I've drunk four cups of coffee today.Have you had a holiday this year 阅读全文