茶犬
幼苗
共回答了18个问题采纳率:100% 举报
答:你很会动脑!这个问题这么提出来,似乎很有道理.
其实问题可以简化.
先看一个比较简单而常见的句型:
It seems that what you say is reasonable.
这是一个句型.it是形式主语,真正的主语是that从句.that-引导的是名词性从句.
而It appears as if the Sun revolves around the Earth every day. 中的it不是形式主语,而是指“情况、天象,人们观察到的那个景象.”,一如:She appears as if she is only 30 years old. 她的外表看上去好象只有30岁.
所以:
Observations of the sky make it appear (to humans) as if the Sun, the moon, and the stars all revolve around the Earth every day, while the Earth itself stayed in one place.
译:对天空的观察,使人感觉好象每天太阳、月亮以及星星全都围绕着地球转,而地球本身却是呆在原地不动似的.
appear是系动词,后面的as if 从句是表语从句.
1年前
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