→ priv:the earliest (pharmaceuticals) / to be isolated from 03/01 13:16
→ priv:the natural sources / were the alkaloids. 03/01 13:17
→ priv:to be isolated from the naturual sources這邊是主詞補語 03/01 13:17
Among pure pharmaceuticals,the earliest to be isolated fromnatural sources
were the alkaloids.
從to be到sources那句感覺怪怪地
可以有人告訴我是怎樣的句型嗎
比如省略句或是....
多謝幫忙 另外這樣的句型適用時機如何
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