关于英语中 have been to 的用法

I have been there for six months.
这句话是现在完成时，there是地点副词前不加介词。
所以have been to 表示曾经去过某地，现在已经不在那了。
但是我看书本上翻译说“我已经在这住了6个月了”，是说明他说话此时已经不在那个地方了吗？

这个短语应该是have been (in) , there 是地点副词前不加介词

have been in表示“在某地呆了多少时间”，常与时间段状语连用。

和你说的例句意思一样

eg.I have been in Shanghai for three years．我到上海已有三年了。
　　He has been in London for half a month．他来伦敦已有半个月了。

I have been there for six months. “我已经在那住了6个月了 ”没错 。have been 在这里不能理解为“曾经去过某地”因为six months 前 用了介词 for . 可以说 I have been there “我曾经去过那” 或 I have been there six twice “我曾经去过那六次” have been to 不能与for +时间段连用

have been to + 表地点名词 表示去过某地（引申义现在不在那个地方，to 是介词后面往往加名词或代词宾格） 而have been in sp. / there /here for some time 表示"至今在某个地方已经停留一段时间" （引申义就是说有可能现在还在所说的地方）, there /here 是副词，不可以与介词连用，所以 不加to 。

现在完成时用来表示之前已发生或完成的动作或状态，其结果的确和现在有联系。动作或状态发生在过去，但它的影响现在还存在；也可表示持续到现在的动作或状态。其构成：have(has)+过去分词。现在完成时通常与模糊的时间状语连用，或无时间状语。现在完成时的时间状语：for,since,so far,ever,never,just,yet,till/until,up to now,in past years,always等现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如live,teach,learn,work,study,know.过去时常用的非持续性动词有come,go,leave,start,die,finish,become,get married等举例：i saw this film yesterday.(强调看的动作发生过了。) i have seen this film.(强调对现在的影响，电影的内容已经知道了。) she has returned from paris.她已从巴黎回来了。 she returned yesterday.她是昨天回来了。 he has been in the league for three years.（在团内的状态可延续） he has been a league member for three years.(是团员的状态可持续) he joined the league three years ago.(三年前入团，joined 为短暂行为。) i have finished my homework now. ---will somebody go and get dr. while? ---he's already been sent for.句子中如有过去时的时间副词（如yesterday,last,week,in 1960）时，不能使用现在完成时，要用过去时。（错）tom has written a letter to his parents last night.(对)tom wrote a letter to his parents last night.

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