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问题 想问老师句中often being 什么意思

At a swimming pool in Los Angeles, children who are taught to hold their breath under water before they can walk often begin learning to swim when two months old.

问题 从句的引导词应该怎么翻译

...le us to understand how complex cultural behavior arose and what guides it in evolutionary or cognitive terms.像该句，what/how的引导词应该怎么翻译？有没有什么技巧？另外，此句中how complex cultural behavior arose，可不可以翻译成文化行为形成的复杂性？

问题 set good examples to / for

They must be athletes who are masters in their sports and also set good examples for others.句子来自2019版人教版高中英语新教材必修一的 Unit 3（p38）。请问句中的 for 可改为 to 吗？若可以，有区别吗？

问题 不定式作定语用主动与被动

语法书上的一个句子：The unknown is a lways something to be feared. 请问：句中的不定式短语 to be feared 应该是修饰 something 的吧？请问这里的不定式一定要用被动式吗？若改用主动式是否也可以？

问题 added to this的意思与用法

下面句子中的 added to this 是什么意思？Added to this, he helped the others to carry their luggage.另外，句中的 added 可以改为现在分词 adding 或不定式 to add 吗？

问题 Coward that he was是倒装吗

 Coward that he was, he ran away as soon as the enemy attacked. 划线部分标注的字，我觉得有点像倒装。请解析，然后翻译整个句子。谢谢！

问题 动词hide与主语是被动关系吗

Hidden behind a tree, the boy could not be found.这个句子是过去时吗？分词部分不能确定时态，could 和 can 都能用在现在时，请问老师这种情况怎么判断时态？Boy 应该是自己藏起来的呀，怎么用过去分词呢？

问题 一个英语复杂中的where从句的理解

The attacks on ambition are many and come from various angles; its public defenders are few and unimpressive, where they are not extremely unattractive.请问如何理解中的 where？

问题 句末的a changed man是什么成分

My father came back from the war a changed man. 请问这个句子中的 a changed man 是什么成分（不会是状语吧）？整个句子是什么意思？

问题 句子成分分析（and again是什么用法）

The postcard is marked 1916 and again September 2010 when it was stamped to arrive.这个句子中 and again 是什么用法？还有那个 when 引导什么从句？

问题 介词on与for的一个用法区别

The doctor is busy preparing an operation____this patient.A.for  B.on正确答案是B. 但我怎么感觉是用for？难道for就不对了吗？还是答案有误？

问题 定语从句和同位语从句的判断

Singapore has a land reclamation project that builds up additional land from the sea floor.这句话从that充当成分来说是定语从句，但是感觉意义上that的引导的句子是对project的解释说明。那么到底是什么从句呢?

问题 as well as和than

The outcome depends on conditions as well as on how events unfold.这里on并列的宾语不对等，是否为语法错误？ As well as 不能连接并列分句，是省略的结果。是否than也可以理解为：不能连接并列分句，是省略的结果？

问题 地点的维度，经度，高程表述问题

...51m的试验路“，下面的表述正确吗?Silty clay was obtained from the experimental road (Figure 1), at which locates latitude 44.896407° N, and longitude 126.559129° E, and elevation 207.51m.

问题 should have put中的have可以去掉吗

You should have put the book where you found it. 请问这句话中，have可以去掉吗？它做什么成分呢？