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问题 available for含义及用法

英语翻译the brain finds it best to keep smell receptors available for unfamiliar and emergency signals such as the smell of smoke,which might indictte the danger of fire.这句话中的 available for如何理解，求详细解释

问题 这个不定式是宾语还是目的状语

Did God mean for you to be like this?我知道for you在这里是不定式的逻辑主语。mean在此是及物动词还是不及物动词？不定式作目的状语还是mean的宾语？

问题 全是熟悉词的句子理解

If it was something along the lines of law or business, you might want to look away now. 本句中 along 应该是介词吧？划红线的词是什么意思呢？该怎么翻译理解呢？谢谢老师了!

问题 that可以代替it作形式主语吗

That isn’t anything for us to be ashamed of.这里的句子为什么用 that 作主语，而不用 it 呢？难道 that 也可以作形式主语吗？

问题 see后的宾语从句

Inside the shelter, he latched the door, and looked around to see that his family was squared away. Now it began. The waiting.  see在这句中是检查的意思，译文是检查查看他的家人是否就位。怎么有个选择性是否的意思。是译文错了吗？

问题 不定式在口语中是否可以表示过去的事

不定式 to do 在口语中可以表示将来和普遍性，那是否可以表示过去的事呢？

问题 after后面可以直接加动词过去时吗

Please place utensils to collection area after completed your meal, Thank You!!请问句中的completed是否要改为completing？

问题 不定式的参照时间问题

I was to have finished my work，but the illness of my mother interfered.这句话have【疑问】参照时间，只能分析为是现在，也就是从现在来看本应该做完的事情，所以用了完成体。但是不定式参照时间，不是应该是主句的谓语动词吗？

问题 before与until的用法

Also, the father seahorse carries baby seahorses and he won't leave them _____ the are big enough to look after themselves.此题参考答案给出until，解析为not...until...句型。但是否能填before？二者表示“直到……才”时有何区别？

问题 英语可以说want sb doing sth吗

我们一般见到 want sb to do sth，但可以说 want sb doing sth 吗？

问题 rely on 后面的动词形式问题

查字典的时候发现rely on 后接的动词有两种形式：rely on sb/sth to dorely on sb/sth doing看了几个例句，这两者之间在用法上有什么区别吗？是否可以互换？

问题 句子时态问题

Those were the last words he ever spoke to us.It'll just be the last thing we ever do.第一个句子的定语从句可不可以改为现在完成时，此时是不是表达到现在为止对我们说的最后一句话？如果用过去完成时，是不是表达到谓语were的时间为止对我们...

问题 请问doing nothing在这里做什么成份呢？

 I don't pay you to sit around all day doing nothing!doing nothing做什么成份？逻辑主语是什么？

问题 got前省略了have么

Clubs that won more than they “should” have tended to drift back towards the pack, whereas ones that looked cursed mostly got their just deserts later on.我觉得看作一般过去时不太合适。

问题 on school nights 有没有语法错误

老师你好！She can't go to the parties on school nights请问以上 on school nights 有没有语法错误?