请问:Again, differences between people and the opportunity for natural selection to take advantage of it have diminished.我查看很多参考书,这里it指differences 但是differences不是复数吗?
...不?before前逗号是不是多余了?
Major reform tasks concerning the fiscal and tax system will be completed by 2016, before a modern fiscal system will be built by 2020.
2. 下面的句子是正确的,为什么不用逗号?
She had to give the doorman a tip before (= inorde...
...:Adele set to sign £90m Sony dealReports suggest the Someone Like You singer is negotiating the biggest record deal for a British artist in history.文中标题set to 是什么意思?查了词典,百度,谷歌,总感觉没有一个满意的解释,set to 总被翻译为开始努力干等...
...e've been all the way to the moon and back,but have trouble crossing the street to meet the new neighbor. 我觉得可以把不定式看作crossing the street的目的状语。二者再共同作trouble后被省的in的宾语.这样看意思说得通。但若把不定式提到ha...