问题 如何区分辨析现在完成时和一般过去时

...区分辨析现在完成时和一般过去时？老师，您好！(1) The weather ______ awful this week. It didn't stop ______ until last night.A. has been; raining      B. was; raining答案是：A. 可我反复研究体会，查询资料，都搞不清为什...

问题 grass-roots 的问题

The Energiewende raises cost, unsettles supply and provokes resistance at grass-roots level.grass-roots level，这里grass-roots作定语，为什么要加s？不加是否可以？

问题 on order作什么成分

A combination of Frontier and Spirit, especially with the hundreds of new Airbus jets both firms have on order, might have increased that share significantly, making it as disruptive as its European counterparts.

问题 句式分析

网上有看到这个句子的解答，还是不太明白British losses were 64 tanks damaged enough to need more than 24 hours to repair up to being written off请给出句式结构，划线句子做的成分和理解，谢谢！

问题 是并列谓语吗？

Everything in the concept has been built，is operating or has a close cousin that is operating.本句话是不是一个简单句中，一个主语带有三个并列谓语动词has been built,is和has呢？谢谢老师

问题 副词和介词连用的问题

Down in the kitchen are several guests.这里是倒装吗?一般不是把介词引导方位的地点提前吗？这里是什么情况？另外就是副词后面为什么可以接介词？谢谢老师了！

问题 of可以修饰所有的词性

Definition of taken care of you in the Idioms Dictionary.of可以修饰后面的短语？of可以表达说明的含义吗？

问题 be held guilty的理解

老师请看以下句子：Doctors will be held guilty if they rish their patients' death.请帮我分析此句子结构，主要是guilty作什么成份我不清楚。谢谢老师。

问题 -er可以加在形容词后面构成名词吗

后缀-er通常是加在动词或名词后面构成名词。如：work—workerbank—banker请问：-er可以加在形容词后面构成名词吗？

话题 it came to me how much easier it would be if we had a range of words

问题 aiming at, aimed at做状语的问题

在作文范文中看到 Aiming at learning it well, it makes sense to devote himself to long hours of practice，但是状语 aiming at…的逻辑主语是不定式 to devote himself to long hours of practice，而且也不是强调动作 aim，是否需要改成形容词化的过去分词 Aimed a...

问题 that为什么不可以省略

在这个句子中，that为什么不可以省略呢？We all know the truth____there are air water and sunlight there are living things. A. that wherever B. Wherever

问题 此处为何不用can

_____ be a definite relation between these paintings and the …A.There can           B.There may练习详解里面这样写到，但学生并不是很理解：情态助动词can虽然也可用来表示可能性，但它不用于表示存在的there be结构中，表示存在某种可能...

问题 taste 和try

The food in that restaurant is quite delicious. Let's ___ it. A try   B taste   这里选择A符合语境，B为什么不合适呢？

问题 星期前不加介词

请问一下，The 2019 World Artificial Intelligence Conference was held Thursday in Shanghai  这个句子中为什么Thursday前不加on，而被省略。   谢谢老师回答了。