those oppotunities:主语
should not be used to replace:谓语
should:助动词
(not) be:系动词表被动
used to replace:动词
classroom activities:宾语
But for me:状语
这是个状语提前的句子.
those oppotunities:主语
should not be used to replace:谓语
should:助动词
(not) be:系动词表被动
used to replace:动词
classroom activities:宾语
But for me:状语
这是个状语提前的句子.