睡到一半睡不着了,后来又去睡了- -~! 651. Since the 1930’s aircraft manufacturers have tried to build airplanes with frictionless wings, wings so smooth and so perfectly shaped that the air passing over them would not become turbulent. 20. Antarctica receives more solar radiation than does any other place on Earth, yet the temperatures are so cold and the ice cap is so reflective that little of the polar ice melts during the summer, were it to do so, the water levels of the oceans would rise 250 feet and engulf most of the world’s great cities.
找了两个so引导成分(这个名字乱取的)长度上有点不是很一样的例子,不过我觉得如果前面的"so引导成分"太长的话,跟第二个"so引导成分"之间有"逗号+and"也是正常的。这两个句子里that前面没有逗号,但是that也修饰第一个"so引导成分"的原因,而不是看起来只修饰第二个"so引导成分"啊? |