present continuous tense 跟present perfect continuous tense的混乱两个都是指"已完成一些东西..但还要继续做"那该用哪一个?我好乱

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present continuous tense 跟present perfect continuous tense的混乱两个都是指"已完成一些东西..但还要继续做"那该用哪一个?我好乱
present continuous tense 跟present perfect continuous tense的混乱
两个都是指"已完成一些东西..但还要继续做"
那该用哪一个?我好乱

present continuous tense 跟present perfect continuous tense的混乱两个都是指"已完成一些东西..但还要继续做"那该用哪一个?我好乱
现在进行时态.和现在完成进行时态.
要具体情况具体分析.
1)I am studying English(强调现在或现在阶段的动作)
2) I have been studying English since last year.(强调从过去到现在,也许一直做下去的动作)