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题库 / GMATLA-SC-76
Until recently, the Inuit people led a nomadic existence, sheltering in igloos, the ice-block domes that are peculiar to north-central Canada, and in structures made of stones, bones, driftwood, and skins.
Until recently, the Inuit people led a nomadic existence, sheltering
During recent times, the Inuit people lead a nomadic existence, sheltering
In the times that are recent, the Inuit people led a nomadic existence, sheltered
Up until recently, the Inuit people, leading a nomadic existence, have sheltered
Until recent times, leading a nomadic existence, the Inuit people were sheltered
题目分析：
本题主要考查了主从句的区别。
选项分析：
选项A：Correct. 本选项在语法和逻辑上均是正确的。
选项B：措辞有误，不能说during recent times，只能说during five years等。这是因为，during身后需要连接一个独立而确定的时间段（例如five years），而不能连接类似于recent times这样的模糊时间。另外，主句的谓语动词应该用过去时，而不能用lead这个一般现在时。
选项C：本选项具有很严重的语法错误。在整个题目中，lead是一个谓语动词，而身后的sheltered也是一个动词的过去式，两个小句间必须有连词来连接，而不能仅靠逗号连接。
选项D：本选项具有较高的迷惑性。利用图形背景原则，我们需要对比主句和伴随状语在时间轴上的持续时间。在逻辑上，“Inuit人住在igloos中”这个事件的持续时间肯定长于“Inuit人引领了流浪生活的风潮”的持续时间。这是因为，肯定是Inuit人“先”住在igloos中，然后他们才能引领流浪风潮。因此，shelter应该是从属成分（伴随状语），lead是主句。
选项E：本选项错误同选项(D)。
ron 的解释：
"Up" is redundant, since "until" already carries this meaning.
• The sentence implies that the Inuit are no longer nomads.
If they were still nomads, the sentence wouldn't say "until recently"; it would say "until now" (or some equivalent). Remember that "recently", albeit not too long ago, is still a time in the past.
So, you need the past tense.
选项D：本选项具有较高的迷惑性。利用图形背景原则，我们需要对比主句和伴随状语在时间轴上的持续时间。在逻辑上，“Inuit人住在igloos中”这个事件的持续时间肯定长于“Inuit人引领了流浪生活的风潮”的持续时间。这是因为，肯定是Inuit人“先”住在igloos中，然后他们才能引领流浪风潮。因此，shelter应该是从属成分（伴随状语），lead是主句。
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