...tion of trace amount of poisonous susbstances in milk and meat products is to be popularized in a country embarrassed by the scandals of clenbuterol and melamine contamination in food.请问"tace amount"前面为什么可以不加不定冠词"a"？
...a reasonable strategy in the
Netherlands, where politics is so fragmented that anything over 10% is a
good result. But it is a weak foundation to rely on for those hoping to
win more than half the vote, such as Ms Le Pen.《经济学人》上面的一个句子，to rely on的逻辑主语是for th...
...un remained stationary, the birds would shift their direction with respect to it at a rate of about 15 degrees per hour.这里with respect to it感觉去掉也可以，为什么要这么用，此句上一句是 In experimenting with artificial suns, Kramer made another interesting discovery.
In the case of an intruder, a triggered motion detector can turn on floodlights in the yard and instruct your stereo to queue up the sound of a barking dog. Or say you want to avoid unwelcome guests. By mounting a video camera at the front door, you can view visitors on a TV screen.第二句话中...
...n economy comes first,but the new democratic senate will also move quickly to confirm the Biden cabinet nominees awaiting hearings.这里的awaiting hearings是否有误呢？ 应该是to await hearings吗？ 还有，如果awaiting hearings.是正确的话，它的逻辑主语是哪个呢?或者说...
And so it was indeed: she was now only ten inches high, and her face brightened up at the thought that she was now the right size for going through the little door intothat lovely garden.indeed在句中的用法，不能作表语吧？
...话题的演讲。（系表结构）I was so much surprised at the scene that I didn't know what to do．我被那种场面搞得大吃一惊，不知所措。（被动语态）动词语态使用时需要注意的是，当lock、open、shut等用作不及物动词且表示主语的某种属性时，...