如下
I am (beautiful ),but she is ( more beautiful) than me.
My school is ( small ),but Tom"s school is (smaller ) than mine.And Sally"s school is the (smallest ).
His hands are 7cm.You hands are 5cm.(两句合成一句）
His hands are 7cm and your hands are 2cm shorter than his.
younger his two me years is than brother(.)（ 连词成句）
His brother is two years younger than me.