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问题 be动词有完成时态吗

For forty years Jane Goodall has been outspoken about making the rest of the world understand and respect the life of these animals.1.has been 是is 的现在完成时，那么 be动词时有完成时态的？2.about介词短语充当什么状语呢?

问题 句子成分

...？谢谢老师。In the seventeenth century the organ, the clavichord，and the harpsichord became the chief instruments of the keyboard group，a supremacy they maintained until the piano supplanted them at the end of the eighteenth century．

问题 before与until的用法

Also, the father seahorse carries baby seahorses and he won't leave them _____ the are big enough to look after themselves.此题参考答案给出until，解析为not...until...句型。但是否能填before？二者表示“直到……才”时有何区别？

问题 if used too much是什么用法

They go out of date quickly and become tiresome if used too much请问这里为什么是用used？

问题 状语和状语从句

...ear ,  while she was driving during a storm , her car ran off the road and hit a tree.请问During the winter holidays in her senior year 的成分是状语， while she was driving during a storm的成分是时间状语从句吗？两个句子都是状语的成分，彼此之间不冲突吗？...

问题 straight修饰动词问题

Go straight ahead and walk about three blocks.1这里的副词straight笔直地是修饰动词go走，还是修饰副词ahead向前？如果是修饰副词ahead，为什么两个方式副词可以连在一起写呢？Light typically travels in a straight line.光通常沿直线传播。2这里的in...

问题 each 后面可以接复数名词吗

在气象出版社1999年11月第一版《中学英语疑难千问千答》第280页上有这样一个句子：Each minutes and each second is valuable to us. 每分每秒对我们都是宝贵的。请问：each 后面可以接复数名词吗？

问题 求分离定语从句的8类例句

...句的一些例句（以下各类，每类请给出一两个例句）：1. that引导的分离定语从句2. which引导的分离定语从句3. who引导的分离定语从句4. whose引导的分离定语从句5. whom引导的分离定语从句6. when引导的分离定语从句7. where引导的分离...

问题 先行词受few修饰时定语从句可以用which来修饰吗

It is one of the few books _______ is about this emperor.这里填 that 肯定是可以的。请问这里可以填 which 吗？

问题 怎么理解nothing intelligent to say

所在的句子：There being nothing intelligent to say to that， we sad noting.既然对此没有什么好说的，我们也没说什么。知道<主系表>中的若干<形容词>可下接<不定式>，但未见此处的<形容词> intelligent下接<不定式> to sa...

问题 nearly引导什么短语作何成分

...al reaction could produce.请问此句中any之前是否省略了energy或 that？非常感谢！

问题 due to 后面的成分分析

At dusk, a red sky indicates that dry weather is on the way. This is due to the sun shining through dust particles being pushed ahead of a high pressure system bringing in dry air. A red sky in the morning is due to the sun again shining through dust.这篇短文的背景知识是“朝霞不出门...

问题 Bridge of Allan copper 是什么意思和什么语法结构

It is said that Bridge of Allan copper was used in the first coinage of halfpennies. 请专家分析一下 Bridge of Allan copper 是什么意思和什么语法结构？

问题 如何分析 do a lot to do sth 的成分

a lot是程度副词吗？不定式to boost his ego是什么成分？Getting that job did a lot to boost his ego. 

问题 ，(逗号)可以起连接作用吗

...： Death is a shadow, unable to escape. Death is like a shadow that still exists even in the darkest night, unable to escape.