Rare objects are beautifully displayed in glass cases____them free from dust.A.which are keeping,B.which keep . C.who keep D. and kept.这句话中为什么选B,不选D,为什么只能用定语从句,不能用并列句,区别是什么,它们在一个

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Rare objects are beautifully displayed in glass cases____them free from dust.A.which are keeping,B.which keep . C.who keep D. and kept.这句话中为什么选B,不选D,为什么只能用定语从句,不能用并列句,区别是什么,它们在一个

Rare objects are beautifully displayed in glass cases____them free from dust.A.which are keeping,B.which keep . C.who keep D. and kept.这句话中为什么选B,不选D,为什么只能用定语从句,不能用并列句,区别是什么,它们在一个
Rare objects are beautifully displayed in glass cases____them free from dust.
A.which are keeping,
B.which keep .
C.who keep
D. and kept.
这句话中为什么选B,不选D,为什么只能用定语从句,不能用并列句,区别是什么,它们在一个句子里,谢谢

Rare objects are beautifully displayed in glass cases____them free from dust.A.which are keeping,B.which keep . C.who keep D. and kept.这句话中为什么选B,不选D,为什么只能用定语从句,不能用并列句,区别是什么,它们在一个
既然你已经明白了B答案是对的,我就不解释定语从句了.那为什么用and的并列句不对呢?
原因是:既然是并列句,也就是说并列句前半部分主语应该和后半部分一致,好,我们来还原一下句子,把你认为对的D答案代进去:
Rare objects are beautifully displayed in glass cases (and kept)them free from dust.
那么刚才说了主语保持一致,再把主语代进去,
Rare objects are beautifully displayed in glass cases (and rare objects kept)them free from dust.
那么,这样看来,D答案就不对了,因为“保持他们远离尘埃”这个动作是玻璃箱glass cases发出来的.
希望您满意!O(∩_∩)O哈哈~

选B
你的问题是为什么不用D,搞成并列的句式吗? 如果不用which,应该这样讲:
Rare objects are beautifully displayed in glass cases and the glass cases keep them(objects) from dust.
which代替的就是glass cases

如果选D, 那么就成了Rare objects are kept them free from dust . 那么此句中的 them 就多余了,因为被动语态是没有宾语的. 因此只能选B.which keep .
keep sth. free from dust 使某物不落灰尘
句意: 稀有物品被漂亮地陈列在玻璃橱里, 可以防止灰尘掉在上面.

D根本就不是并列句子

这句话的主干是Rare objects are beautifully displayed in glass cases

并列句子你要么是完全是一个新的主干结构句子,要么共用一个主语
比如:He likes reading books, and she likes shopping.

只有使用定语从句才能说通的

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