请问这句英语的语法该如何解释?请问这句英语的语法该如何解释：People can enjoy a more delightful life when living in a nursing home.请问在从句“when living in a nursing home”中,living in a nursing home 是现在分

请问这句英语的语法该如何解释?请问这句英语的语法该如何解释：People can enjoy a more delightful life when living in a nursing home.请问在从句“when living in a nursing home”中,living in a nursing home 是现在分
请问这句英语的语法该如何解释?
请问这句英语的语法该如何解释：People can enjoy a more delightful life when living in a nursing home.
请问在从句“when living in a nursing home”中,living in a nursing home 是现在分词吗?那么主语是哪一个呢?

请问这句英语的语法该如何解释?请问这句英语的语法该如何解释：People can enjoy a more delightful life when living in a nursing home.请问在从句“when living in a nursing home”中,living in a nursing home 是现在分
先肯定你的理解是对的.
它的主语应当是主句的主语.这是一句由‘when’引出省略了主语的从句,由于主语就是原句中主句的的主语,可以将从句的主语省略,原来的的动词用现在分词短语的形式来表示.
还原后：People can enjoy a more delightful life when they live in a nursing home.

你说的这种情况属于下面（1）④连词(when , while , though )+ 现在分词
状语从句中的省略 一般说来省略现象多出现在下列五种状语从句中：由 when ,while ,as ,before, after , till, until, once等引导的时间状语从句；由whether ,if , unless 等引导的条件状语从句；由 though , although ...

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你说的这种情况属于下面（1）④连词(when , while , though )+ 现在分词
状语从句中的省略 一般说来省略现象多出现在下列五种状语从句中：由 when ,while ,as ,before, after , till, until, once等引导的时间状语从句；由whether ,if , unless 等引导的条件状语从句；由 though , although ,even if ,whatever等引导的让步状语从句；由 as ,than 等引导的比较状语从句；由as, as if , as though 等引导的方式状语从句。上述状语从句在省略时，并非任何成分都可以省略而是遵循下面原则：（1）当状语从句的主语与主句的主语一致时，可以省略状语从句的主语和系动词be ，这时从句中可出现如下结构：① 连词（as, as if , once）+ 名词 如：Once (he was)a worker ,Pang Long now becomes a famous singer .庞龙曾经是个工人，现在变成一位著名的歌手。 ②连词（ though, whether , when）+形容词 如：Work hard when (you are) young ,or you'll regret.趁年轻要努力学习，要不然你会后悔的。 ③连词(whether, as if ,while )+介词短语 如：He looked everywhere as if (he was)in search of something .他到处看似乎在找什么东西。④连词(when , while , though )+ 现在分词 如：While (he was) holding talks with President Hu Jintao ,US President George W. Bush thanked China for its important role in the Six-Party Talks.美国总统布什在与胡锦涛主席会谈时，感谢中国在六方会谈中起的重要作用。 ⑤ 连词(when ,if ,even if ,unless ,once ,until, than , as ) + 过去分词 如：The exhibition is more interesting than (it was) expected .这次展览比被预料的有趣的多 ⑥ 连词(as if ,as though ) + 不定式 如：Olympic gold medallist hurdler Liu Xiang opened his lips as if (he were) to speak .奥林匹克金牌获得者跨栏运动员刘翔张开嘴好象要说什么。注意：当从句的主语和主句的宾语一致时，间或也有这样的省略：Her father told her to be careful when (she was)crossing the street.当她过马路时父亲告诉她要当心。（2）当从句的主语是 it，谓语动词中又含有系动词be 时 ，可以把it和系动词be一起省略。此时构成连词(if , unless ,when , whenever)+形容词的结构。如：Unless (it is) necessary ,you'd better not refer to the dictionary.如果没有必要，你最好不要查字典。

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这句简单分得话是people是主语部分，enjoy...home是宾语部分。这里when...做条件状语，这是一个省略句型。如果主语不变，when doing就相当于when sb do.这道题如果去掉when,living...就是个宾语补语。