大家帮我找20个形容词和20个副词加er加more加are加去y各5个要分形容词和副词,

不明白
形容词加er,是不是这样
stronger,harder,sweeter,nicer,fatter,thinner,taller,shorter,further ...
加more
more beautiful,more perfect,more precious,more painful,more candid,.
加are加去y ,是甚麽?