×In order to get through the dense jungle, a native guide is necessary. 有一本书(The Randomhouse Handbook)说这个句子是错误的，但没有分析。我看不出有什么错误。请分析。
这是一种很常见的错误。按照英语语法的要求,in order to 引出的动词不定式,其逻辑主语应当与句子的语法主语相一致。例如：
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In order to follow the buffalo, the Indians often had to move their camps. (DAI) 为了跟随野牛，印第安人常常不得不迁移营地。
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He was saving as much as possible in order to repay Jennie eventually. (Dreiser) 他尽最大可能节省钱以便最终还清他欠珍妮的债。
如果动词不定式的逻辑主语与句子的语法主语不一致,则需要用 for 引出动词不定式的逻辑主语:
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In order for you to be eligible for a student grant, your parents must receive less than a stipulated annual income. (CGEL) 你要有资格获得奖学金，你父母的年收入必须低于某规定值。
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They left the door open in order for me to hear the baby. (CGEL) 他们开着门以便让我听到婴儿的动静。
或者使用 in order that 引导的从句：
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I lent him £ 5 in order that he might go for a holiday. (Palmer) 我借给他五英镑以便他能去度假。
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And I have come all the way from Vienna in order that you should thoroughly understand me. (Wilde) 我远道从维也纳赶来是为了让你彻底理解我。
据此,你所问的句子可以有两种改法:
(1) In order for you to get through the dense jungle, a native guide is necessary.
(2) In order that you get through the dense jungle...