...ve been introduced earlier to someone, do not assume that the person would remember you and be prepared to reintroduce yourself should it be necessary. 从“have been introduced”和“do not assume”和“be prepared”来看，这句话讲的是现在的情况，因此用了现在完成时和...
_______，if I had arrived yesterday without letting you know beforehand.A．Would you be surprisedB．Were you surprisedC．Had you been surprisedD．Would you have been surprised这个题目还是困扰着我，与过去事实相反的假设，那么主句的那个事情不是应该在已经发生...
...当其定语的动词不定式既可以加介词，也可以不加介词：the place to live in 或者the place to live 。接着，他用例句来证明这一点：a fit place to place in一个适合居住的地方Carrie looked about … for a place to sit and eat .嘉丽环顾四周，想找一个...
...是后面两个as开头的东西我不是很懂，尤其是as the burden with responsibilities，burden不是形容词嘛，这个看上去就变成一个像名词短语一样的结构。
Even those many of us who teach more or less effectively are often overwhelmed by justifitable concern for our ...
...新概念英语2-33课，其中第一句话，Nearly a week passed before the girl was able to
explain what had happened to her.如果宾语从句时态写成过去时是不是错句。Nearly a week
passed before the girl was able to explain what happened to her.我看了语法书举例子，宾语...
...于express sth as a percentage如何进行翻译呢？又如例句：These figures are expressed as a percentage ofthe total. 如何进行翻译？ a percentage ofthe total 如何理解？Spending on research and development as a percentage of profits. 如何翻译？ a percentag...
老师好，请问一下：While there are many positive developments associated with theInternet, there are also certain fears and concerns. One concern relates to...此处的one不能用a的原因是什么？是one区别于a的什么用法？
Restaurants are careful about keeping the taste oftheir dishes consistent. Customers like to know what they're getting when ordering something.请问consistent在句子中什么词性？
... ofthe member states.to be felt做什么成分？2．We have no proofand whenthere is no proof, rumour runs riot.为什么该句有两个谓语动词have和runs？3．What makes you think that you've got the right to maul me like that？为什么特殊疑问句没有助动词呢？that从句是...