he has already been to nearly every country in the world句中,been的用法有时加to,有时不加to,请问什么情况下才需要加to?

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he has already been to nearly every country in the world句中,been的用法有时加to,有时不加to,请问什么情况下才需要加to?
he has already been to nearly every country in the world
句中,been的用法有时加to,有时不加to,请问什么情况下才需要加to?

he has already been to nearly every country in the world句中,been的用法有时加to,有时不加to,请问什么情况下才需要加to?
加不加to不是看been,而是看后面的词,to表方向,every country前就要加to
1）have+been +过去分词,构成完成式被动语态,例如：
English has been taught in China for many years.(中国教英语已经多年.)
2)现在完成进行时构成：have / has been + 现在分词
用法:)下面详细举例：
用于表示动作从过去某一时间开始一直延续到现在或离现在不远的时间,动作是否继续下去,则需视起来而
定.如：
How long has it been raining?雨下多久了?
She has been sitting there for more than 2 hours.他已经在那坐了两个多小时了.
We’ve been seeing quite a lot of each other recently.最近我们常常见面.
He has been telephoning me several times in two days.这两天他打了好几次电话给我.

后面是完成时态就不加to,反之则加。

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