It has the following advantages./It does us a lot of good.是比较简单常用的表达;
另外除了形容词表达It is beneficial to us.我们可以换用动词表达：
It benefits us quite a lot.
或者改成名词格式：
It is of great benefit to us.
具体应用实例：
Books are like friends.They can help us know the world better,and they can
open our minds and widen our horizons.Therefore,reading extensively is of great
benefit to us.
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GRE写作中需要用到表示有好处，有益处的句式可以参考一下这些：
It has the following advantages./It does us a lot of good.是比较简单常用的表达;
另外除了形容词表达It is beneficial to us.我们可以换用动词表达：
It benefits us quite a lot.
或者改成名词格式：
It is of great benefit to us.
具体应用实例：
Books are like friends.They can help us know the world better,and they can open our minds and widen our horizons.Therefore,reading extensively is of great benefit to us.