American archaeologist William Rathje developed a hypothesis that considered an explosion in long-distance exchange a fundamental cause of Mayan civilization in Mesoamerica. that后面的同位语从句中的句子结构不太理解，请求老师解答。
...编高级英语语法125-126页： Ihaven't heard from him since he lived in Shanghai.(自从他住在上海那段时间，我就没有接到过他的来信。)He
has written to me frequently since I was ill.(自从我上回生病期间，他就频频给我写...
The most insignificant of Strickland’s works suggests a personality which is strange, tormented, and complex; andit is this surely which prevents even those who do not like his pictures from being indifferent to them; it is this which has excited so curious an interest in his life and c...
It was comforting to suppose that the stream of life would flow on through time in whatever course God had given it - without interference by one of the drops in that stream -man. " 1、whatever course God （which）had given it这个which不在从句中作宾语，为什么省略？2、...
...ull，at which point a text is automatically send to a local operator says
that…想请教这句话这里为何要使用which，因为我觉得这里which后面并没有引导一个定语从句。所以我想可以写成at that point…，或是then a text is…。请老师指教这里单词which...
...ds)drag
around a phantom limb of poverty, burdened with the sneaking sense that
something isn’t right, no matter what their bank account says. 曹老师好，请教老师：“burdened
with the sneaking sense that something isn’t right”作句子什么成分？burdened…
看作they的非限制...
Carbon and oxygen taken together,one atom each,gives you the deadly gas carbon monoxide. taken together是过去分词作定语修饰carbon and oxygen吗？另外，one atom each是什么用法
Despite the celebrations, though, in the U．S.the jazz audience continues to shrink and grow older, and the music has failed to connect with younger generations.句子中though 语法作用是什么？什么意思？despite 也是尽管的意思吧？谢谢
If you look through and the sun is too bright, out of focus and surrounded by a murky haze, the sun glasses are not safe. 这里out of和surrounded是作状语吗？逻辑主语感觉是后面的the sunglasses吗？为什么放在了这个位置，谢谢老师了！