we are having fun while learning together.while后为何用动名词形式?while不是介词啊?
问题描述：
we are having fun while learning together.
while后为何用动名词形式?while不是介词啊?
答
因为前面有are， 这里省掉了 are,否则太罗嗦
答
doing while doing 就这么用
答
we are having fun while (we are) learning together
while表示当**的时候,这里的用法和when是一样的.