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问题 having been heated是什么结构

The iron ball having been heated to a high temperature, we found it began to melt.请问老师这 里having been heated 中的 have 为什么要加ing？

问题 用as还是用but

Your living is determined not so much by what life brings to you as by the attitude you bring to life. 请问老师，这个句子是不是有“不是...而是”的结构，那as那里改成but是不是更好？as在这里是什么意思啊？谢谢!

问题 if条件状语从句时态的用法

If you are already planning to take time meeting with someone, add a third or fourth person to the party. 当if引导的从句是现在进行时，主句add a third......是用一般将来时态吗？

问题 increased、giving语法作用分析

Rather,increased"experience"had caused the camputer's datebase to grow,giving it more date to process,which takes time.这里的increased是否用increasing更好？ giving的逻辑主语在哪里呢？which指代数据处理这件事，还是更多的数据？ 求指点。

问题 名词与动名词有什么区别？

They preferred death to surrender to the enemy.Where are you going camping this weekend？为什么有的时候直接用单词本身的名词形式（surrender），而有时候又需要用动名词形式(camping)？？ 名词与动词词 究竟有什么不同呢？

问题 请问这个句子成分怎么分析

He was so experienced and so business-like, however, that he came very near being rude— failing to remember, as he did, that the individuals he was trying to instruct were volunteer players and not salaried underlings.

问题 定语从句正误判断

1.There are many reasons why/for which/that/不填 people want to engage in voluntourism.2.Students should involve themselves in community activities where/from which/that/不填they can gain experience for growth.3.This is the place they once lived.   This is the place in which they once ...

问题 短语词义辨析考题2

On the graduation ceremony,the president of our university ( )us to go wherever we were needed most.A.called uponB.called upC.called offD.called out

问题 句子分析

Hence its attempt to push beyond the smartphone ,into smart watches and wristbands,connected domestic appliances and the business market. 老师，我知道hence是副词，意思是因此。attempt应该是一个名词，后面的不定式短语作定语，但是这个connected做啥成分？这...

问题 What从句的疑问

The test pieces  were loaded with a weight according to what is described in the standard methods.请问老师，这句话中what从句的使用正确吗？这是主语从句？

问题 悬空不定式用法

既然悬空不定式和句子前面的成分构成逻辑主语或逻辑宾语的关系，那么这句话是否正确？the invention of helmet made the soldiers more difficult to be shot on head.

问题 what和whatever

I think the doctor is able to care of whatever is the matter with your son.这里的whatever是否可以改为what？即of 后是what引导的名词性从句。

问题 句子结构分析

我想知道下面句子的成分，和该句的句法分析，越详细越好，谢谢老师！I don't think that in your day you properly understood how much of your work was due to the shifts of what you called the weather.

问题 last 是序数词吗

first是序数词，但 last算是序数词吗？He is the first to come, not the last.

问题 more than 用在动词double 前表示什么含义

CNN: 《Proposed Stimulus Package Advances in Congress》The Biden Administration's proposal would more than double the minimum wage to $15 per hour by the year 2025.more than 用在动词double 前表示什么含义呢？还有，by the year 2025 是否要求谓语动词double使用完成时呢？