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问题 “住在某街道几号”用什么介词

英语可以说 in the street 和 on the street，但下面两句呢？He lives in 152 Base Street.He lives on 152 Base Street.有人说只能用 at：He lives at 152 Base Street.

问题 how引导的从句作主语还是作状语

It's so beautiful how the water reflects the sky.这个主语从句为什么用how引导呢？此句how做状语吗？如何理解？

问题 方式状语从句的用法

They did the experiment as their chemistry teacher had instructed.这句话中的as引导方式状语从句，结尾能不能加them或to do，感觉这句话不完整，方式状语从句应该怎么用？Do it the way you were told. 这句话中结尾能不能加to do it？

问题 关于含 if 的省略

My thought at the time was that the sample had been corrupted, but if so not by my presence.but 作为连词，其后面所连接的句子是不是省略了谓语？but if so, that was not by my presence. 这样还原对不对？

问题 While是否可以引导定语从句

根据新牛津英汉双解大词典的While词条，While可作为关系副词引导定语从句，并给出了例句：the period while the animal remains alive可是查阅几本语法书都么有找到While的这个用法，老师们对while引导定语从句是如何看的。谢谢！

问题 主句的主系表是哪几个

Given the widespread hostility to “public” women in the eighteenth century, was female political activity quite so unproblematic as these new studies tend to assume?

问题 spoke about的问题

The last man to face-and beat-Nadal, 80th-ranked Botic van de Zandschulp, who is 29, spoke after his 6-4,6-4 victory about idolizing the Spaniard.这句话spoke 应该接后面这个about吧？为什么这里有两个6-4?

问题 20-year-old这类词有哪些语法特征

类似 20-year-old 这样的词既可以用作形容词也可以用作名词。如：(1) Mary drove. Her ten-year-old daughter sat behind. 玛丽开车，她10岁的女儿坐在后面。（ten-year-old 用作形容词，作定语）(2) She’s quite clever for a ten-year-old. 对一个10岁的孩子...

问题 这是非谓语的虚拟用法吗

It is time that the children were in bed.=It is time for the children to be in bed.上文第二句是虚拟吗？因为两句相等，同时第一句还是虚拟，所以第二句会不会也是虚拟。谢谢回答。

问题 even though 的时态问题

翻译：尽管她知道答案，她也不回答。请问老师这句话用一般现在时还是用一般过去时合适？为什么？Even though she knows the answer, she doesn't respond.Even though she knew the answer, she didn't respond.

问题 than用法疑问（来自cnn ）

The network uses WiFi technology and sensors to produce position data than is more accurate than GPS, the location system used in smartphones. 请问第一个 than 是不是应该是 that？谢谢。如果是 than，请大概解释一下句意。

问题 as early as 用法

The festival began to be observed as early as in the Warring States Period.句子里as early as 后面的in是否多余呢？我在语料库里没找第二个as后面加in的，如果加in，那as什么词性呢?

问题 one和that替代如何区分

The emotion he felt was one he had felt for some time.这里为什么用one, 而不是用that替代呢？one应该替代an emtion, 而that是替代the emtion呀， 不懂。请老师分析，谢谢！

问题 cause可以用双宾语结构吗

The earthquake caused great damage to his property.请问上面这样的例句,它是双宾语结构吗?是不是也可以调换成下面这样?The earthquake caused his property great damage.

问题 that后面是动词还是名词

The marginal wetlands that remain continue to be threatened by reclamation for farms and homes. 如何理解此处的remain continue？ 难道remain后面可以接动词吗？ that remain不是做The marginal wetlands谓语吗？ continue这里又是一个谓语？ 双谓语吗？