While the other boys and girls were playing on teh playground,she alone remained in the classroom reading.请问这里为什么不能用as,而用While呢?

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Whiletheotherboysandgirlswereplayingontehplayground,shealoneremainedintheclassroomreading.请问这里为什么不能用

While the other boys and girls were playing on teh playground,she alone remained in the classroom reading.请问这里为什么不能用as,而用While呢?
While the other boys and girls were playing on teh playground,she alone remained in the classroom reading.
请问这里为什么不能用as,而用While呢?

While the other boys and girls were playing on teh playground,she alone remained in the classroom reading.请问这里为什么不能用as,而用While呢?
除了一楼的朋友说的原因以外,还有一个原因就是“while”后面可以接非从句性的进行时态,这个是“while”特有的.