should和ought to的肯定、否定、疑问及其回答的形式?意义?重点?

问题描述:

should和ought to的肯定、否定、疑问及其回答的形式?意义?重点?

should should not should i go to school?yes,you should.
应该(偏向于主观)
ought to ought not to ought i to go to school?yes,you ought to.
应该(偏向于客观事实)