...来。It’s not yet known
what she did. 她做什么还不得而知。It was uncertain
whether he could come or not. 他是否会来还不肯定。这三句句首的it均为形式主语，相应的真主语分别是that he didn’t come /
what she did / whether he could come or not。 二、表语...
...还不是特别理解，想再问下如果句子改成 The iron ball hasbeen heated to a high temperature, we found it began to melt. 正确吗？这样和独立主格结构的那句语意上有什么区别？谢谢！前面一个问题在：http://ask.yygrammar.com/q-25276.html
The behavioral sciences hasbeen slow to change partly because the explanatory items often seem to be directly observed.既然名词修饰名词作定语，表示分类、类别、用途等，这里的 behavioral 可以改为 behavior 吗？即 behavior sciences 表示行为一类的科学。
... number of places and Puma fur was found clinging to bushes.As no Puma had been reported missing from any zoo in the country, this one must have been in the possession of a private collector and somehow managed to escape.上面的两个句子clinging和missing 书上说都是做主语补足语？我...
...ormed, some four and a half billion years ago, the number of minerals here has increased dramatically, from a few dozen relatively simple minerals early on...to over 4,300 kinds of minerals we can identify today-many of them wonderfully complex.教授: 自从地球在45亿年前形成开始，...
He has doubled his height in the past few years.He hasbeen in United States of America for the past few years.in / for the past few years 用法以及语意上究竟有什么区别呢?
请教一下曹老师，Decreasing in the depth of caries lesion
was notified by polarized-light micrographs as applying either
nano-hydroxyapatite toothpaste or nano-hydroxyapatite gel as greater than
fluoride varnish, with no reduction in the depth for untreated group.如何理解句中as applying...
...从每题所给的A、B、C、D四个选项中选出最佳选项。I’ve been motivated – and demotivated – by other folks’
achievements all my life.When I was a teenager, a neighborhood friend ___41___ a
marathon race. Feeling motivated, I started running ___42___, but then two
things happen...
In the 30 years he’s been working to identify, preserve and study fossils in our national parks, that number has gone up to 265 of the 414 units of the National Park System – in part, thanks to his work.这句话好像没有从句，全是主句，而且还没有并列连接词。正确吗？请...
The love affair between Americans and their automobiles hasbeen a continuing subject of derisive commentary by both foreign and domestic critics. 这句话我的译文是：美国人非常衷爱汽车，这长期以来受到国内外批评家嘲笑。答案是：美国人过分钟情于汽车,长...
请老师帮忙看看，这道题应该选什么呢，以及为什么。He hasbeen receiving phone calls from journalists since he became famous.They ________ to know what will become of his life in the future.A．have wanted B．are wantingC．want D．wanted