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As recently as 6,000 B.C., the southern frontier of the desert was far to the north of where it is now, while semiarid grassland and shallow freshwate
句子
As recently as 6,000 B.C., the southern frontier of the desert was far to the north of where it is now, while semiarid grassland and shallow freshwater lakes covered much of what are now arid plains.
问题
句子分析（俗称“长难句分析”）是训练提高基础阅读能力的有效手段。我们通过对托福(TOEFL)、雅思(IELTS)、GRE、考研以及四六级等考试中真实出现过的句子（如真题、TPO，剑桥系列）进行结构化分析，可以有效提升句子理解的准确性和效率。朗播通过近百万的用户实际数据分析发现，练习 300-400 个句子，会让阅读能力有显著提升。请按顺序阅读句子，并思考：
1. 句子属于哪种结构类型？简单句？并列复合句？主从复合句？
2. 句子由哪些子句构成，连接这些子句的关联词是什么？
3. 每个子句中各个语法成分分别是哪些？
4. 句子的中文意思是什么？
1. 句子属于哪种结构类型？简单句？并列复合句？主从复合句？
2. 句子由哪些子句构成，连接这些子句的关联词是什么？
3. 每个子句中各个语法成分分别是哪些？
4. 句子的中文意思是什么？
1. 并列复合句
2. 原句中的各个子句，子句类型以及连接词
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子句-1As recently as 6,000 B.C., the southern frontier of the desert was far to the north of some place.子句类型:并列句连接词:
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子句-2It is now in some place.子句类型:宾语从句连接词: WHERE
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子句-3Semiarid grassland and shallow freshwater lakes covered much of some place.子句类型:并列句连接词: WHILE
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子句-4Some places are now arid plains.子句类型:宾语从句连接词: WHAT
3. 句子成分
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子句-1As recently as 6,000 B.C., [状语] the southern frontier [主语] of the desert [定语] was [系动词] far [表语] to the north [状语] of some place. [定语]
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子句-2It [主语] is [系动词] now [状语] in some place. [表语]
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子句-3Semiarid grassland [主语] and [连接词] shallow freshwater lakes [主语] covered [谓语] much of some place. [宾语]
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子句-4Some places [主语] are [系动词] now [状语] arid plains. [表语]
4. 句子翻译
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子句-1As recently as 6,000 B.C., the southern frontier of the desert was far to the north of some place.在公元前 6000 年的时候，沙漠南部边界所在的位置在公元前 6000 年的时候，沙漠南部边界所在的位置比某个位置要靠北很多。
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子句-2It is now in some place.它现在在某地。
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子句-3Semiarid grassland and shallow freshwater lakes covered much of some place.半干旱的草原和浅的淡水湖泊覆盖了某地的大部分地区。
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子句-4Some places are now arid plains.某地现在是干旱的平原。
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全句As recently as 6,000 B.C., the southern frontier of the desert was far to the north of where it is now, while semiarid grassland and shallow freshwater lakes covered much of what are now arid plains.在公元前 6000 年的时候，沙漠南部边界所在的位置比现在的位置要靠北很多，那时候半干旱的草原和浅的淡水湖泊覆盖了现在是干旱平原的地方的大部分地区。
考点解析
根据朗播专家权威分析，句子“As recently as 6,000 B.C., the southern frontier of the desert was far to the north of where it is now, while semiarid grassland and shallow freshwate 英语长难句解析 ”主要针对以下知识点进行考查，关于这些知识点的讲解如下：
并列复合句
并列复合句含有两套或者更多相互并列的主谓结构的句子。
①Water has weight; air has weight too, but it is very light.
②Heat is energy, so is electricity.
宾语从句
在主从复合句中充当宾语的句子是宾语从句。
①He told us that they would help us through the whole work.
②We are talking about whether we admit students into our club.
并列句
并列句是构成并列复合句的简单句。
①I like action movies but I don't like thrillers.
②Take the chance, or else you will regret it.
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