...主要表示发生在谓语动作之前的动作。如：Having been there once，she
knew the place quite well. 由于去过那儿一次，她对那地方很熟悉。Having failed twice, he
didn’t want to try again. 他已经失败了两次，不想再试了。二、现在分词完成式与一般...
有一句话，it is because we
feel a little strange using the word neither， because we don't use it
very often.请教一下这句话里“using the word
neither”做什么语法成分？在这里为什么用using分词形式呢？在using前面是否存在一个omitted的介词呢？比如说of...
老师好！向老师请教一个句子：Of the 10 cities with vending machines nationwide, one of them will be located at Rockefeller Center in New York City, just south of its famed Christmas tree. 我想不明白前面的这部分Of the 10 cities with vending machines nationwide跟后面的主...
We have to admit the fact that not only Apollo uses less storage but it looks amazing.We have to admit the fact that not only does Apollo use less storage but it looks amazing.请问老师，not only Apollo uses less storage but it looks amazing可以和that连用吗？这两个句子都对吗？
句子：What was it you strated to tell me in the restaurant that you didn‘t understand
about me？首先就我个人而言，it was what that….是强调句型我知道，信息焦点是what，作后面那个定语从句的宾语。特殊疑问句型就是What was it that……。那我就想...
...才跟无to不定式（Know takes a bare
infinitival only in the perfect and with a special sense）例如：I'd never known him (to) lose his temper before.但I know him to
be thoroughly reliable一句中，to不能省略。CGEL所称know的“特定语义”指的是“亲身的、直接的经历...
老师您好，在书上看到这个句子不懂：”people use a box with an opening ,big enough for monkey to slide its hand in "第一个问题是：在书上看到 adj+enough to do 是作为结果状语，我有点不太理解，不定式后面的In，不是在说明它是后置定语修饰名...
（1）It seems to me that she complains of a headache. （2）It seems to be true that we are the same age. 感觉它和it seems that不一样，有了to后主句挺完整了，此时that从句是否可以看作是主语从句了？
...table, for instance. What I want to know is whether what I am going to do with it is a miracle or not.老师，辅导书上说，what在 what I am going to do with it 这个从句中做to do 的宾语，有点不明白，不是do with it是一个固定的搭配吗？请老师分析一下句子成...
...版
acknowledge 词条)
The party adopted [= selected, chose]
her as its candidate for mayor. 该政党提名她为市长候选人。（摘自《韦氏高阶英汉双解词典》p.30）
I would characterize this as a
positive change for our company. 我会将此定义为我们公司的一种积极...