标题: 只剩两个~怎么比？在线等！ [打印本页] 作者: sierrapan 时间: 2009-11-26 14:23 标题: 只剩两个~怎么比？在线等！ Rock samples taken from the remains of an asteroid about twice the size of the 6-mile –wide asteroid eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on earth
has been dated to be 3.47 billion years old and thus is
has been dated at 3.47 billion years old and thus
have been dated to be 3.47 billion years old and thus are
have been dated as being 3.47 billion years old and thus
have been dated at 3.47 billion years old and thus are CE怎么比？作者: sierrapan 时间: 2009-11-26 14:47
答案是E作者: conia 时间: 2009-11-26 15:19
背下来，：）作者: Boot 时间: 2009-11-26 15:23
去听听GWD的录音吧，这题有讲到，词组意思的细微差别。作者: aeoluseros 时间: 2009-11-26 17:50
这里其实...date to be肯定就错了，要用也使用date to 3.47 million years这种 但是date to中的to表达了一种趋向性，所以后面要用ago这种词：date to 3.47 million years ago。 而at是强调了一个时间点，所以date at 3.47 million years old的搭配更为合理。作者: lolmandy 时间: 2009-11-26 20:21
date to be 倾向于说date后使之变为XX million years old... 个人理解作者: sierrapan 时间: 2009-11-26 20:55
哪里有听的？