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1. 表示一直持续的动作
Mary has been ill for three days.
玛丽病了三天了。
I have lived in the city since 1998.
自从1998年以来我一直住在这座城市。
I have been here since I moved here with my family.
自从和家人一起搬到这里，我就一直住这儿。
Everyone has been a part of a group since he was born.
每个人自出生后就已经成为群体的一部分。
2. 现在完成时的否定句式have/has+not
I have not yet copied the important file.
我还没有备份这个重要的文件。
He hasn't planned to travel in Australia.
他还没计划去澳大利亚旅行。
You haven't heard of the problem from public.
你还没有从公众那里听到这个问题。
I haven't taken up the job because of some reasons.
由于一些原因我还没有接受这项工作。
3. have/has提前的一般疑问式
Have they cancelled the gathering meeting?
他们已经取消了聚会吗？
Ha Jane gone back home to fetch the tools?
简已经回家去拿工具了吗？
Have you found all the ways we can use?
你已经找出所有我们能用的方法了吗？
Have you pointed out the related problem?
你们已经指出相关的问题了吗？
4. 现在完成时的时间状语
We have remained to be part of the club since last year.
我们自去年以来就一直是这个俱乐部的成员。
He has been here waiting for you for one hour.
他一直在这里等你，已经一个小时了。
He has studied in China for three years.
他已经在中国学习三年了。
He has remained in the national team since 2004.
自从2004年以来，他一直在国家队。
adj. 相关的，有亲属关系的
