Where have you been?I’ve been looking for you for the last half hour.
问题描述:
Where have you been?I’ve been looking for you for the last half hour.
答
你去哪儿了?我找了你半个小时.
last指现在之前的,到现在为止的,last half hour前半个小时
例:She has been complaining for the last couple of days.她过去几天一直在抱怨.