作者management (慈悲渡苦难)
看板Eng-Class
标题[请益] 句型问题
时间Mon Mar 1 12:45:24 2010
Among pure pharmaceuticals,the earliest to be isolated fromnatural sources
were the alkaloids.
从to be到sources那句感觉怪怪地
可以有人告诉我是怎样的句型吗
比如省略句或是....
多谢帮忙 另外这样的句型适用时机如何
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1F：→ priv:the earliest (pharmaceuticals) / to be isolated from 03/01 13:16
2F：→ priv:the natural sources / were the alkaloids. 03/01 13:17
3F：→ priv:to be isolated from the naturual sources这边是主词补语 03/01 13:17