For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
A.each a roof of poles and arrowweed
B.each a roof of poles and arrowweed that are being
prep语法笔记: 1,with 型独立主格,与主句形成紧密的逻辑联系,形式为: 由“with +宾语+宾补”构成的复合结构,在句中可作状语,表示伴随。这一结构中的宾语补足语 可由现在分词、过去分词、形容词、副词或介词短语等来充当 Visitors to the park have often looked into the leafy canopy and seen monkeys sleeping on the branches, with arms and legs hanging like socks on a clothesline. 2,each 型独立主格,强调句尾名词,形式为: 句子 + 复数名词结尾, each + 介词短语/形容词短语/-ed 形式/-ing 形式。
E选项的that are 很明显多余了。如果是with roofs of poles and arrowweed supported by……正好是“with +宾语+宾补 的结果” B选项的that are being 也同样破坏了each型独立主格的形式。
独立主格一般只有3种形式 1 n + n./分词/形容词/介词 2 with + n + 分词/形容词/介词 3 each + 分词/形容词/介词 三种结构中each结构必须用于句子末尾是复数名词的情况,用于强调句尾名词,而with结构与句子承紧密逻辑关系,n+n结构则与句子承松散关系
这句话的主语是the Mojave ,如果只看骨架的话就是the Mojave ...with roofs of poles and arrowweed that are...明显是不通的。其次,我觉得E的that are是啰嗦的,虽然不是致命错误,但我觉得GMAT有时就是在考那个选项简洁。这是我的一点看法,欢迎指正