英语单项选择求解析!_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析.为什么选A不

英语单项选择求解析!_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析.为什么选A不
英语单项选择求解析!
_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析.为什么选A不选C

英语单项选择求解析!_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析.为什么选A不
选A 是因为它是一个倒装结构,而且as的这种用法意思是“虽然,尽管”,句子的意思是“虽然西南部的沙漠里很少下雨,但那里却有不少的植物种类”,as引导这种让步状语的结构是adj./n/v./adv.+as +主语+谓语
C是肯定不行的,因为两个句子中间必须要有一个连词,这里就要在前面加上一个although就对了

我觉得选择D，独立组合结构。

由as引导让步状语从句要用部分倒装或前置。句式为：表语/状语/动词原形＋as/though＋主语＋其他。如：
Clever as he is（=Though/Although he is clever)，he doesn’t study well.
虽然他很聪明，但他学习不好。
Child as he is(=Though /Although he is a child)，...

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由as引导让步状语从句要用部分倒装或前置。句式为：表语/状语/动词原形＋as/though＋主语＋其他。如：
Clever as he is（=Though/Although he is clever)，he doesn’t study well.
虽然他很聪明，但他学习不好。
Child as he is(=Though /Although he is a child)， he knows a lot.
虽然他是个孩子，但他懂得不少事情。(单数可数名词前零冠词）
Much as I like it(=Though /Although I like it very much)，I won’t buy it.
虽然我非常喜欢它，但我不买。
Try as she might(=Though/ Although she might try)， she failed.
虽然她试过了，但还是失败了。
祝你进步！

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_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析。为什么选A不选C

这是复合句,...

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_________there,the southwest desert contains a remarkable variety of plants．[　　]　 A．Rarelyas it rains 　 B．Sometimes it rains C．It rarely rains 　 D．Although rarely rains 求详细解析。为什么选A不选C

这是复合句,前面需要一个从句,四个答案中只有A符合条件.
B,无连词
C无连词
D有连词,但少主语.

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A应该是rarely as 吧，哪有rarelyas这么个单词啊？
.never等具有否定意义的词和词组居于句首要倒装。（紧跟否定词后的句子倒装，其他句子为正常语序。）常见的否定词有：never、rarely、seldom、little、hardly、not、nowhere等常见的否定词组有：not until、not often、hardly…when、no sooner…than、ne...

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A应该是rarely as 吧，哪有rarelyas这么个单词啊？
.never等具有否定意义的词和词组居于句首要倒装。（紧跟否定词后的句子倒装，其他句子为正常语序。）常见的否定词有：never、rarely、seldom、little、hardly、not、nowhere等常见的否定词组有：not until、not often、hardly…when、no sooner…than、neither…nor、not only… but alsoLittle did I know that she had already left. 我一点也不知道她离开了。Not often do they meet. 他们不常见面。Not only is he rich but also he is very kind.★＊Not 放在句首修饰句子的主语，构成主语的一部分，则不需要倒装。Not a word was said.Not a word did I say at the meeting. (not 修饰谓语动词)→I didn’t say a word at the meeting.
B应该是it sometomes rains
C中rarely 否定要提前
D中although是连词，rarely是副词，再说没有主语，怎能选他啊

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