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我的理解
Although用法:1.although + 主谓宾(句子) 2.although + 短语:短语要是能跟前面平行的东西,否侧不能加短语。
以下这段话是来自曼哈顿instructor的解释,可以看一看帮助理解
Eg: A recent poll indicates that many people in the United States hold a combination of conservative and liberal political views; i.e., they denounce big government, saying government is doing too much and has become too powerful, while at the same time supporting many specific government programs for health care, education, and the environment.
Here also, after the while we don't have an active verb, but still the construction is correct.
That's a bit different example. In the question you posted, there is clear parallelism between "saying government is doing too much and has become too powerful, while at the same time supporting many specific government programs..."
In this sentence, there's nothing to make parallel to sighted. "Sunspots appear on the surface although never sighted" You could get away with changing the second part to a prepositional phrase, such as: "sunspots appear on the surface although not at the poles". Instead, A gives us two clear verbs to make parallel. |
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