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.

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英语-请问这两句话有区别吗?ihavespecializedinteachingmathforfiveyears.ihavebeenspecializedinteachingmathforfiveye

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.
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.

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.

i have specialized in teaching math for five years.
我已经从事数学教育五年了。

i have been specialized in teaching math for five years.

我已经学了数学五年了。

希...

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i have specialized in teaching math for five years.
我已经从事数学教育五年了。

i have been specialized in teaching math for five years.

我已经学了数学五年了。

希望能帮到你，祝更上一层楼O(∩_∩)O
有不明白的请继续追问(*^__^*)

收起

第一句表示已经完成了“我曾经教过五年数学（现在不教了）”
第二句表示还在进行中“我已经教了五年数学了（现在还在教）”

有区别，虽然都是被动语态，但一个是完成时，一个不是（我这学期刚学，相信我啊）

第一句强调的是个状态, 我教了5年数学，所以我有资格当你的数学老师
第二句强调的是个过程,我5年一直都在教数学，所以我熟悉各种曲线嘎嘎~

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