老师，

accord, deal, agreement, convention, treaty 等都有协议，条约的意思，他们大致有什么区别呢？

你有兴趣的话，找一本同义词词典查一下，比问任何一个老师都准确。否则就没有必要区别。

非常感谢!

曹老师： They had the same smile and the same voice. When psychologist Thomas Bouchard Jr. invited the Jim twins to his lab, his colleagues found it very hard to tell them apart. But the similarities didn't stop at the physical. 1）最后一句话：但相似之处不只是身体上的。那么，这里的physical是形容词吗？其后省略了什么呢？ They had both had dogs named Toy. They had both married women named Linda, and then divorced them. They had both been sheriffs, enjoyed making things with wood, suffered severe headaches, and admitted to leaving love notes around the house for their wives. They had so much in common that it seemed unlikely these were just coincidences. 2）上面是They had both had dogs，为什么不是They both had had dogs 呢？ 3）这个（enjoyed making..., suffered severe..., and admitted to）- 这3个动词之前都省略了had？还是这3个动词都是一般过去时？

1 这是形容词的名词化，相当于含有表示特征、性质之类的名词。2 因为助动词had是弱读的词项，both要放在弱读的操作词之后。3 都是过去完成时。

曹老师： In 1963 a Lancaster bomber crashed on Wallis Island, a remote place in the South Pacific, a long way west of Samoa 1）这个a remote place in the South Pacific是Wallis Island同位语？ 2）这个a long way west of Samoa 是定语吗？修饰的仍然是Wallis Island？还是修饰的是中心词a remote place [a remote place in the South Pacific]呢？ The plane wasn't too badly damaged, but over the years, the crash was forgotten and the wreck remained undisturbed. Then in 1989, twenty-six years after the crash, the plane was accidentally rediscovered in an aerial survey of the island. By this time, a Lancaster bomber in reasonable condition was rare and worth rescuing. 3）这个By this time = at this time 吗？不然很难理解这个by this time究竟是指什么时候？我想知道这个by this time 的语义 - 指的是哪个时间点，还是哪个时间段？

1 是的。2 补充说明Wallis Island。3 this time显然指1989年。用by而没有用at，就是强调经过一段之间之后的这个时间。用at在没有这层意思。