问题 He is the only child in/of his family.用in还是of

He is the only child in / of his family. 这句话中式用 in 还是用 of?

问题 sky前用a与the的区别

...r in the sky. 太阳爬高了。There was a kite high up in the sky. 高高的天空中有一只风筝。老师说如果sky受到描绘性形容词的修饰，前面也可以用a，但老师没有举例。请老师举例说一下，谢谢！

问题 分析不定式 to recognize a masterpiece

He knows enough about art to recognize a masterpiece when he sees it.这里的不定式to recognize a masterpiece怎么分析？

问题 这两个句子中为什么用where来修饰

These frequently are not enforced in the context of civil wars where non-state actors are involved.The statistics inversed where up to 90 percent of casualties during conflict were civilians.这两个句子为什么用where?

问题 能否用the other one替代another one

老师们好，请问这个句子能否用the other one替代another one?Students are taught in two languages, English and another one, such as French, German or Japanese。这里为什么不用the other one?

问题 a…or two 作主语时谓语动词用单数还是复数

请问一下，a…or two 作主语时谓语动词用单数还是复数？比如：A scandal or two add / adds a little spice to office life. 

问题 表示“过了某个地方”用什么介词

过了邮局，请向右拐。________ the post office, please turn right.要求填入一个介词。

话题 时间段作主语，谓语动词要不要用单数？

问题 不定冠词表示“每”有哪几类用法

语法书上说，不定冠词a, an 可以表示“每”，与 per 同义，翻了几本语法书，所举的例子都是once a day, twice a week, three times a year之类用法，想请教一下，除此类搭配外，不定冠词表示“每”还有哪些用法？谢谢！

问题 小学对加粗部分提问

... 第一个Beijing也用where，而第二个Beijing则用what，咋用浅显的语言对三种情况分别解释一下呢？what与where究竟如何选择？

问题 both用法

下面的both用法是副词吗？ //The Wallaces ,both children of church minister,had a clearly formula for their magazine. //He visited the Institute of Neurology in Havana where they both worked. //We have both worked there. 为什么不能用 Both of boys have been ill，而可以说 Both o...

问题 One student in a hundred 作主语时谓语动词用单数还是复数

One student in a hundred _____ (is/are) to be chosen to attend the meeting. 答案是：is，为什么不能用 are？如果按比例，100个当中选1个，那么200个当中就选2个，300个当中就选3个，400个当中就选4个，……应该是可以用单数或复数啊。

问题 关于how不用于“比较”的疑问

下面的内容摘自《牛津英语用法指南》（第三版）第252节：how进行比较时，我们用 as 或 like或 the way，不用 how：Hold it in both hands, as / like / the way Mummy does. 用双手捧住，像妈妈那样。（不能说：... how Mummy does.)但我实在没有看出来...

问题 than后面用不定式还是动名词

than 后面用不定式还是动名词？Nothing is more unpleasant than                insects in your bath. A. finding           B. to find

问题 为什么用一般过去时而不用过去完成时

The 80000 objects collected by Sir Hans Sloane_______(form) the core collection of the British Museum opened in 1759.（2022新高考I） 官方答案是formed，这里为什么不能用had formed？