在主动语态中，help后的不定式是可以省略的，但在被动语态中，这个to就必须加上（这好像是所有省略to和加上to的原则吧），是这样吧？比如：主动：Working with native speakers helped me get a good grasp of the l...
在一本资料书上看到，not...until…句式用于强调结构时，其基本形式是It is (was) not until…that…，但我见过It was not until…that…这样的句子，没有见过It is not until…that…这样的句子。请问not...until…的强调句...
当要表示“检查”某情况“是否”如何时，check后是要接that引导的宾语从句，还是接if, whether引导的宾语从句？如下面这个句子：We had better check that all the doors are locked. 我们最好检查一下所有的门是否都锁...
We dont know what weve got until we lose it,but its also true that we dont know what weve been missing until it arrives.为什么用 have been missing，不能用别的？谢谢！如题
according to 主要用作状语，这我知道，但它可用作表语吗?比如：How did you do the work?It was according to what told me.这句中的according to用得对吗?如题
有这样两句话，它们的区别在哪? He speaks very good English. He speaks English very well.如题
You would be right if you were not so wrong. 怎么翻译是：你错得不算太离谱。这句子实在看不懂。如题
Anna was reading a piece of science fiction, completely ___ to the outside world. a. being lost b. to be lost c.losing d. lost 为什么不能选择a？如题
在一本书上看“缩合连接代词”一词，不知道是啥意思。书上说下面句子中的what就是缩合连接代词：Have you got any idea what she wants? 你知道她要什么吗?She was not happy at what he said. 对他说的话她感到不高兴...
We’d need access to information.=======还有这里为什么是would的？如题
but与however均可表示转折或对比，意思是“但是”“可是”“然而”等，此时but与however有何区别？有人说however前不能用逗号，是这样吗？如题
对于口语中表示问候的how are you的回答，我知道有以下两个： Fine, thank you. And you? 很好，谢谢。你好吗?Very well, thanks. And you? 很好，谢谢。你好吗?请问还有哪些可能的常用回答吗？如题
The critic is he who can translate into another manner or a new material his impression of beautiful things.这句话来自The Picture of Dorian Gray序言的第二段开头。如题
有本书说关系副词when, where, why既可引导限制性定语从句，也可引导非限制性定语从句，但我在另一本书上又看到说：why只能引导限制性定语从句，不能引导非限制性定语从句。到底哪个对？如题
我知道，poem是可数名词，意思是“（一首）诗”；poetry是不可数名词，指“诗”的总称。如：It’s a quotation from a poem by Keats. 这句话出自济慈的一首诗。（可数，指一首诗）I have now developed an appreciation...
在不少书看到，当police 表总称时，其前必须要有定冠词。但事实上我经常见到它前面不用冠词的情况啊。比如下面这道题，它是一道2006年山东卷高考英语试题：Police are now searching for a woman who is reported to...