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问题 句子后面的 on it 是否重复

...，没棱角儿，也没平面儿。Thus my uncle had wanted to use it for the gable when he was building a house, but he was troubled to find it of very irregular shape, with no edges nor corners, nor a flat plane on it. 老师您好！想请问一下最后为什么要加一个on it，不重复吗...

问题 确定句子谓语动词

The first thing that you should do is call the police right now.请问这句话中的谓语动词是否是should do, is 和call。如果call 是谓语动词的话那么句子中应该还差一个连接词，是否是is后面省略了that的表语从句连接词。

问题 句中非谓语experienced被动词汇含义以及over/on区分

The resistance experienced when one body moves over another, with which it is in contact, is called frictional force. 1)句中experienced是非谓语，相当于done, 和the resistence有被动完成关系，我无法理解这里的experienced词汇被动含义？2)moves over another: over如...

问题 特殊疑问句中用多个不同的疑问词

What food / snack from which area / ethnic group will you bring?请问这里为什么既有 what，还在句子中间有 which 呢？

问题 look forward to可以用于不好的事吗

...did not look forward to being in debt because his restaurant was no longer popular.句子来源：高中英语人教版必修三第二单元（Unit 2）。

问题 decide on的理解与用法

It is often difficult to decide on the inventor of certain inventions. 请问这里的 decide on 是什么意思呢？decide 及物不及物时意思不同吗？

问题 advance on与advance to的区别

He advanced on the city. 他向该城进发。这里为什么不用介词 to 而用介词 on 呢？没看明白，求解答！谢谢！

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 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?

问题 现在完成时并列句用一般过去时还是一般现在时

练习册上有个习题，写的是Tang poems have been translated into foreign languages and they (are popular with) foreign readers.此处括号里的are能不能用were代替，为什么？

问题 四川大学2017年第四篇考博阅读

...ular rise. But Chinese is also a bit-player on Twitter, as a result of the popularity of Sina Weibo, a competing Twitter-like service in China.  The same is true of Wikipedia: here Chinese is somewhat better connected, but it is still much less than its size or GDP would predict, possibly thank...

问题 every Sunday 与 on every Sunday 的用法

...的：I go to church every Sunday. 我每星期天都上教堂做礼拜。The rubbish is collected every Tuesday. 垃圾每星期二收走。但可以用 on every Sunday, on every Monday, on every Tuesday等吗？因为在某体的某一天，英语习惯上是用介词 on 的，这里的介词 on ...

问题 如何理解含有半助动词的be to, be going to的if从句可以表示“目的”

If I am to be there on time, I must leave now.书上说，含有半助动词的be to, be going to的if从句，可以表示“目的”，因此，上面句子的意思可以有如果我打算准时到达那里，我就必须马上动身。或为了准时到达那里，我必须马上动身（该句...

问题 如何理解 “be+as much+a+名词+as+句子”结构的中 as much

MALE PROFESSOR: Now, when I say "gardens," I don't mean vegetable gardens,or simple flower gardens.MALE PROFESSOR: These were lavishly constructed, finely detailed gardens that covered hundreds of acres,with exotic plants and ornamental statues.MALE PROFESSOR: And they w...

问题 on up 什么意思

...话中on up表达什么含义，如果要说装满水，那直接写fill the bottle with some water不就可以了吗？为什么还要有on up？