老师们好，曾经看到过一句话，对其中的so it is that百思不得其解，烦请老师们分析一下：In a way we were agreeing with Langston Hughes, that blackbard of Harlem, who had written earlier:O, yes, I say it plain, America never was America to me, And yet I swear this oath...
...will help you gain a better understanding of China.疑问：句中为何用的是 its 而不是 it’s 呢？(2) Vast as it is, the Pacific Ocean has not stood in the way of exchanges and cooperation between our two peoples over the past two hundred years, and many moving episodes of mutual learning...
...nd we are dealing with forces outside the ordinary laws of Nature... ？我的意思是为什么不是 if Dr. Mortimer's surmise IS correct，为什么使用了should be ? 这里不懂should be是什么用法。麻烦老师解答一下。谢谢！
...老师，这是VOA中美国前总统卡特项目中心一位工作人员说的原话，我猜测由于是现场说话，或许会有小错误。但是，我看不懂：We're not going to be making an overall statement on the degree to which, this the entire electoral process met international standa...