He has gone abroad ten years ago.He hasn't already returned

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He has gone abroad ten years ago.He hasn't already returned home for 10 years.

1 .前面这个句子不对.　ten years ago 不能跟完成时连用.
建议改为：　He went abroad ten years ago.
2. 后面句子也有问题,　aready 不用于否定句, 可以用yet 代替.yet 一般不再跟for 10 years 一起连用了
建议改为:He hasn't yet returned home. 或者He hasn't returned home for 10 years.
再问：那第一句要改为现在完成时呢？应该怎么变？
再答： He has been abroad for ten years.
再问：可他至今还没有回来呀！been不是表示往返，而gone才表示只去没回吗？
再答： be abroad　表示"在外",状态，　所以才可以用完成时＋for一段时间 has been to (a　place) 表示去过一个定放，已经回来了。gone 表示在去往哪里
再问：这句话的意思是：他十年前就出国了。他已经有十年没有回家了。所以说就是他去了却没回。照你的说法不应该使用gone吗？
再答： since 跟完成时态连用　后面接“时间点”　，表示一个起始时间 for　跟“时间段”, 用since, 还是for可以由具体句子的不同表示来选择
再问：不好意思，我修改了一下追问。since是可以，表示自从的意思。
再答： He has been abroad for 10 years. 更加合理，　不然就是很生硬：He has been abroad since he left his motherland ten years ago. 也可以It is ten years since he went abroad.
再问：这句话的意思是：他十年前就出国了。他已经有十年没有回家了。所以说就是他去了却没回。照你的说法不应该使用gone吗？照你的说法不应该使用gone吗？
再答：呵呵，gone表示“前往”,　但不与　for +一段时间连用, 因为它不是一个持续行动词总不能"10年里"一直在"前往吧” has been to 也好，(与次数连用）　have gone (to)也好,不接for 10 years

He has gone abroad ten years ago.He hasn't already returned Neither you nor he has gone/has been/hasn't gone/hasn't been He had already gone & He has already gone He was said to have gone abroad 3 years ago.句子为什么用 to have g 用正确的英语单词填空1.He has gone abroad.He will return ( ) two years' He has gone abroad.He will return in two years' time 翻译 he _ the book to the Alice yet.A has returned B.hasn't retur He has already gone to England He's already back home,___he? A hasn't B has C is D isn't He's already back home,___he?A hasn't B has C is D isn't He has many friends,hasn't he? He has become what he wanted to be ten years ago这是什么从句