since then 后面的时态
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since前后该用什么时态啊
"Since"通常用于表示从过去某个时间点开始一直延续到现在的时间段。 它后面的动作或状态通常使用完成时态，表示动作或状态已经开始并一直持续到现在。例如：- I have been living in this city since 2010. (我从2010年开始就一直住在这个城市。)- They have been married since last year. (他们从去年开始就结婚了。)- She has been working in the company since...