...They
had just enough time to swim out of danger when/before the boat again completed
a circle. 说这里的when和before一个意思。因此，我的困惑便由此产生了，看下句：(2)The
snow had not stopped ( ) we arrived in Shanghai one hour later. 注意以上2句是同样的结构：主...
...，a mother of three是同位语3.The buildings，both new and old，look completely different. 这里，both new and old，是同位语还是后置定语？4.Worried，his mom called in a doctor and a nurse. worried属于形容词做状语还是非谓语动词做状语呢？怎么区分？
they have an incentive to use their innovations to improve their own services, rather than renting or selling them to rivals，这里renting or rolling 前面是 省略了 they are 吗？有这种用法吗？
...river of liquid rock was coming towards him. It threatened to surround him completely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photogra...
...”，是不应该用introduce，而应用describe。我认为“for the first time”是introduce非常重要的一个要素，不知这观点是否正确。我想这也是http://www.yygrammar.com/Article/201108/2474.html中说【“介绍某学校”“介绍某国家”“介绍某机构”等场...
Here
Strickland lived, coming seldom to Papeete, on the produce of the land. There
was a little stream that ran not far away, in which he bathed, and down this on
occasion would come a shoal of fish. Then the natives would assemble with
spears, and with much shouting would transfix the great startle...
句子分析：The selection is unrivalled and the prices high, although the sales offer some great bargains, and the store's own clothing line is reasonable.此句中，the prices high 为什么没有动词？
近期解决的题目：http://ask.yygrammar.com/q-26128.htmlAs soon as he landed on the inflated landing mat, and withthe crowd onits feet, Mike immediately began preparing for his next attempt at flight.以上例句中两个状语修饰主句需要用and连接。 那么下面的句子:He sat...
...：1. Debtor and creditor overdraw primarily , the banker-customer relationship is that of debtor and creditor—who is which depending on whether the customer's account is in credit or is overdrawn.Debtor and creditor overdraw primarily, the banker-customer relationship is that of debtor and credit...
Russians have a deep love for their own language and carry large chunks of memorized poetry in their heads, while Italian politicians tend to elaborate speech that would seem old-fashioned to most English speakers.这句话的 memorized如何理解？
...until such time as I
may deem it expedient to forestall them by telling my own story. （C.
Dickens: Oliver Twist）[汉译略]6. Meadows was wandering about the premises until
such time as Robinson should return.（C.
Reade: It Is Never Too Late to Mend）[汉译略]7. Which of these approaches (or...