The outcome of the review is likely to be just a tweak to its target or communications policy and a decision not to change to its tools.请问老师change to its tools的to是否多余？
Hospital staff burst into cheers after doctors completed a 20-hour operation _______ one-year-old twins at the head.A. to separate B. to have separated 老师，您好。此题究竟选A还是选B，我一直困惑不解。有人说只可以选A，有人说必须是B。您的看法是什么呢...
请看这句话：Perhaps Charles's plan for an area of cleared ground is not as useful as we thought.在这句话中，cleared ground前是没有冠词的。是否可以这样理解：在说话时an area of cleared ground是不存在的，在cleared ground前不能加the或者a,因为冠...
第一，Is this （the） train for Shanghai？书上说名词中心词有后置修饰语，所以这是前照应特指，所以填the.In__a__
review of 44 studies, American researchers found that .....这个难道不是前照应特指？为什么填a呢？第二， He has a good knowledge of man...
They have been alerted to the possibility of further price rises.他们己意识到价格可能继续上涨。牛津字典上写的用法是alert sb to sth 使认识到，使意识到。我想问他为什么要加been。是因为alert sb to sth=sb be alerted to sth吗？希望老师可以解释一...
...构成的定语从句与不定式的转换：
1） The farmer used wood to build a house in which he could
store grains.
2） The farmer used wood to build a house in which to store
grains.
3） The farmer used wood to build a house to store grains in.
“介词+关系代词+ to do”结构不...
有些琢磨不透have been to是怎么一个原理结构？是不是have done+be to=have been to？be to的意思是 将要做，然后加上完成时的形式后 have been to，表示已经做过？包含着一种 非延续性的含义在其中 对吗？然后如果have been to Beijing就表示去...
...并列连词主要有and, but, or, so, yet等。如：This is me and these
are my friends. 这是我，这些是我的朋友。They must stay in
water, or they will die. 他们必须呆在水里，否则就会死去。I have failed, yet I
shall try again. 我失败了，但我还要尝试。The work...