英语最高级造句四句

The Yellow River is the second longest river in China.

黄河是中国第二长河。

They are happiest on Saturdays.

他们在星期六最快乐。 

He is the youngest and tallest boy in his class.

他是班上年龄最小、个子最高的男孩。 

That book is most interesting.

那本书非常有趣。