However, as his career was beginning, Cai's parents sent him to the United States to study music.I saw him as he was getting off the bus.begin和set off是短暂性动词吧，为什么不是一般过去时？两句...
...多次系统都提示 illegal operation，谢谢!But that carried a risk, because it is cooler at high than at low elevations, and in an especially cool year, it might be too cold to grow crops at all.在这句中than at low elevations可以省略吗？恢复成完整的句子应该是because it is ...
...at athletes should compete as individuals or in
none-national teams, might be too much to hope for.But in the present
organization of the Olympics, there is far too much that encourages aggressive
patriotism.老师，这两个句子里都有too much，都是太多的意思么？都是做代词的成...
Darwin had a phrase to describe those ignorant of evolution: they “look
at an organic being as a savage looks at a ship, as at something wholly beyond
his comprehension” .as引导的方式状语从句可倒装，这里as a savage looks
at a map可以改写成as+助动词+主语的形式吗？Som...
He phoned us to attend the meeting as scheduled.He phoned me to say the meeting would be postphoned.请问这两句用的都是 phone sb to do sth，但其中不定式的用法是不同的，对吗？我指的是它们的句子是不同的，对不对？请老师分析一下，谢谢！
...都是对句，有it则都是错句。为何不能有it?1.The train might be late，as it happened
yesterday. 上面这句为何不能有it?下边各句，都是不能有it。2. I have prepared a new plan，as it follows. 3.They lost money，as it was expected. 4.Don't
lose your passport， as I did...
...most fundamental level,any change in neural responses after as compared to before any experience can be labeled a memory.【这是一篇关于“记忆”的文献，这句话应该是在介绍记忆】我看不懂“after as compared to before any experience”,请问这句话该如何翻译呢？
1、The amount each person contributes decide will be left to the
discretion of the individual.捐款数额将由每个人自己决定问题1: 请曹老师判断一下;我感觉这个amount后面跟了一个定语从句修饰amount，但是each person
contributes decide这个定语从句我搞不明...
...er examine why educational attainment
there has levelled off, and what can be done about it.2. In a separate briefing, we examine an even graver problem.请问上面为什么不用have examined，用一般现在时的为什么？这是什么用法？是一般现在时表示过去吗？如果是这...
...nd women at work in the fields.An element is a substance that cannot be broken down into simpler substance by ordinary chemical means.老师，介词短语，非谓语短语（多个非谓语短语），在句子中作定语或状语时，如何区别？通常通过中文的意思才知道吗...
...为was firmly stuck 是系表结构，stuck 是 adj. unable to move or to be moved ；因为stick 这个动词当v.to become fixed in one position and
impossible to move时，它是不及物动词，所以没有被动语态。但是生词却标记为动词，为什么不标记为形容词呢？
...ll our seats occupied.
l heard my name called.
b句：I have a letter
to be written.
a句b句都是及物动词做非谓语的被动语态，请问老师为何a句过去分词与宾语是动宾关系而b句不定式与宾语是主谓关系呢？难道就是因为a句是过去分词做宾补而强...