He has been there for six months 和 My brother has never been abroad before.这2个句中为什么要加BEEN?FOR起什么作用呢》?

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He has been there for six months 和 My brother has never been abroad before.这2个句中为什么要加BEEN?FOR起什么作用呢》?
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He has been there for six months 和 My brother has never been abroad before.这2个句中为什么要加BEEN?FOR起什么作用呢》?
He has been there for six months 和 My brother has never been abroad before.
这2个句中为什么要加BEEN?FOR起什么作用呢》?

He has been there for six months 和 My brother has never been abroad before.这2个句中为什么要加BEEN?FOR起什么作用呢》?
been在这是be动词的分词形式,这是一完成时的句子,需有have+动词分词形式．for后加一时间段表示状况一直持续

现在完成时 用been
for表示持续一段时间
(indicating a length of time 表示一段时间): I'm going away for a few days. 我要离开几天. * He was in prison for twenty years. 他在监狱中蹲了二十年. * You said you would love me for ever. 你说过你永远爱我. (b)

been是完成时态的结构。
for是表示持续一段时间。

been 表明一个持续状态，for引出一个时间段。
He has been there for six months ：
他已经在那儿呆了有6个月。（持续6个月的状态）
My brother has never been abroad before：
此前，我兄弟从未在国外呆过。（在“此前”我兄弟从未出过国这样一个持续的状态）...

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been 表明一个持续状态，for引出一个时间段。
He has been there for six months ：
他已经在那儿呆了有6个月。（持续6个月的状态）
My brother has never been abroad before：
此前，我兄弟从未在国外呆过。（在“此前”我兄弟从未出过国这样一个持续的状态）

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句一中be there 是句子的谓语，助词has 帮助be完成完成时态时，be要变been，for接时间表示持续多长时间。
句二同理。

he has been there _twice____.画线提问 He has never been there.英译汉 He has been there for six months.为什么不是has been in there? he has been there [twice]就划线部分提问【 】he been there 为什么是How long has he been there 而不是How long has he gone there He has been there twice 划线提问twice He has just been to there 错在哪里? He has often been there.不用完成时怎么说 Since when has he been there?怎么翻译 He has been to Shenzhen several times .Now he has _______ (去）there again . He has often been there.换成He often to there.怎么样 He knows a lot about Egypt.I heard he( )there before. A.has been B.has gone C.had been. he has been there teice （twice划线）对划线部分提问___ ___ ___has he been there? He has never been to new york .i have never been there,either.同义句 He has been there many times in the past .为什么句中有been. He has been there for six months .为什么句中有been,有什么作用? now he has ()there for two weeks.填been还是gone?为什么是been ---Where is your uncle?---He to Hong Kong.He there for many times.A.has gone;has beenB.has been;has been C.has gone;has gone D.has been;has gone