来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/04/28 23:51:52
英语-请问这两句话有区别吗?
i have specialized in teaching math for five years.
i have been specialized in teaching math for five years.
其实没有什么区别,只不过第二句通常不这么说.
比较常见的是第一句,如果非要使用句型二,可以这么说：
I have been specializing in teaching math for five years.
意思如果非要细分,同Iorihaha所述.
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