Therefore to increase the yield of the targeted products, many factors are taken into consideration.这个句子是对的吧?这里的to increase的逻辑主语是省略了吗?因为肯定不是many factors。
Therefore to increase the yield of the targeted products, many factors are taken into consideration.
不定式的逻辑主语,肯定不是 many factors,因为它是句子的“受事者”。那么,它一定是被动句中省略了的 “施事者”,即 by 后面的那个名词或代词。也许是 us, them, the authorities 等。你把它变成主动句后,逻辑主语自然就有了。
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