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 that are being supported by posts set in a rectangle.
语法 Sentence Correction-1522
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正确的用户笔记
wanglichris2014 2014-03-23 17:47:57
that are being修饰的是roof，错误
lee1991 2014-05-05 17:51:24
that are being错误；
tiffanykid 2015-09-30 12:46:54
(1) plural are being supported agrees with plural poles and arrowweed, not singular roof. (2) that and other relative pronouns usually refer to the immediately preceding noun.
tiffanykid 2015-09-30 12:48:36
And that's the problem--The intended meaning is that the roof is supported, not just the components of the roof. But that's awfully close to call, so we can fall back on the classic OG explanation: (B) is "wordy and awkward": (1) (B) has 3 extra words. (2) awkward usage of "being" in (B)--even if you wanted to use a relative clause with that, why not just say "that are supported"?
