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问题 hundreds of…等作主语时的主谓一致（用单数还是复数）

...___ at risk. (is / are)2. Millions of gallons of water ______ kept back by the dam. (is / are)第1题肯定选are，这没有问题；第2题呢？怎么选？

问题 family 用法

人教英语七年下43页有一个对话里面的句子是：What is your family doing ?回答是：We usually stay in when it snows 问句里的family 想表达的意思是家人，为什么没用are ？

问题 句中it's been a year 等同于 it is a year 吗?

VOA 《Pandemic Helper ?  Techonology Succeeds, Falls Short During the Crisis》People have turned to technology as never before.During the pandemic,work,school,visiting the doctor, staying close to friends and family, for better or worse, it's been a year for technology to showcase how it can pla...

问题 The US alone throws away some 500 million plastic straws a day.

老师能分析下，这里的alone做什么成分呢？具体什么用法呢？

问题 all of which的用法

Even rates of participation in walking and cycling are declining. All of which suggests we should be marched to the nearest gym. 这句话中的all of which为什么用which，是什么用法？为什么在两个句子中？

问题 关于如何识别伴随状语

...er” in which they sheltered pretending that their work had nothing to do with human welfare.这里 pretending that their work had nothing to do with human welfare 是否伴随状语还是目的状语，如果是伴随状语的话？为什么有的伴随状语有逗号，有的没有，这两者之...

问题 完成时含义分析

1.Roman Catholicism had been the state religion and the only one allowed by the Spanish crown.2.The decision of the New York Philharmonic to hire Alan Gilbert as its next music director has been the talk of the classical-music world ever since the sudden announcement of his appointment in 2009. ...

问题 one of money 是什么用法

The problem is not reducible to one of money. one of 后面不是要接复数名词，这里怎么接了不可数名词呢？

问题 过去分词做后置定语前面可以有逗号么

Microsoft is counting on Windows 10, launched in July, to help it win a bigger share of the market for tablets and smartphones, now dominated by Apple Inc and South Korea's Samsung Electronics Co Ltd. 疑问：这句中红色部分是过去分词做定语么？与做状语如何区分？

问题 请帮忙翻译句子(It tends to ignore...)

It(a system of conservation)tends to ignore, and thus eventually to eliminate, many elements in the land community that lack commercial value, but that are essential to its healthy functioning.请老师帮忙翻译并分析此句，谢谢！

问题 in front of的用法

以上红线处是不是有错误?指教室内部的前面应该用in the front of？

问题 be动词可以表示动作吗

看见其他网友提问的句子，（1）The audience were on their feet with joy，又联想到以前句子 （2）They was married in september.（当时老师说这个be等于get），另外，（3）please be seated，这三句话都是be动词表示动作吗？谢谢！

问题 environment 是如何转化为前缀 ece-的

eco-car 的意思是“环保汽车”，其解释是 connected with the environment。不知道 environment 是如何转化为前缀 ece- 的。

问题 冠词用法

In a 2014 study, Elizabeth Dunn, associate professor of psychology at UBC, invited people on their way into a coffee shop ．为什么这里associate professor前不加an 是错误还是有什么根据？

问题 a designer's opinion…的分析

A show is like an essay, a designer's opinion written in fabric on the body, in a given time period. 这里a designer's opinion written in fabric on the body, in a given time period是与essay并列做like的宾语还是essay的同位语？