educate的形容词形式是educational；
educational：adj.教育的；有关教育的；有教育意义的
We are chiefly concerned with improving educational standards.
我们主要关心的是提高教育水平。
Watching television can be very educational.
看电视会使人受到很多教益。
Thousands of Victorian workers joined educational associations in an attempt to better themselves.
维多利亚时代成千上万名工人加入了各种教育协会，以求上进。
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