Again, a very nice summary. Thanks! My opinions:

NewVoice 2011-08-20 04:35:27 ( reads)

Discussions:

1. "the Middle Ages" is definitely better.

2. 第一，二句应用被动语气，但不太好，不喜欢这种用法。

Two unequal stones were dropped to the ground at the same time.
Two unequal stones were dropped on the ground at the same time.

Both #3 and #4 are acceptable.

Both #3 and

跟帖(13)

Thank you, Dr. NewVoice.

Oops, I only looked at grammar,

just learned: release -> let fall, haha

Thanks! Jennea, you are so thorough! Learned.

我啥都google，成习惯了～

关于被动语态

借地谢谢牙医。你的t和tr的读法说得很好，我一下解决了以前t结尾辅音发不好的问题。

你那个choi知道怎么回事了没有啊？

谢谢jennea！choi经过泡泡和你的提示，我的发音得到了native speaker的肯定。

不用谢。就是因为我自己也不肯定，所以才想知道你的答案～～

不用谢

愚教授一直是很大方的。

I did not know this trend. Learned! Thanks!