1)It has the following advantages.
2)It does us a lot of good.
3)It benefits us quite a lot.
4)It is beneficial to us.
5)It is of great benefit to us.
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.
1)It has more disadvantages than advantages.
2)It does us much harm.
3)It is harmful to us.
例：However, everything divides into two. Television can also be harmful to us. It can do harm to our health and make us lazy if we spend too much time watching television.
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