Cách `1`: So sánh bằng:  His father doesn't play football as skillfully as him

Cách `2`: So sánh hơn: He plays football more skillfully than his father

Cách `3`: So sánh kém: His father plays football worse than him
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Ctruc: 

So sánh bằng:  `S +` to-be `+` as `+` adj `+` as `+` O ...

So sánh hơn/ kém:

+ Tính từ ngắn: S + V + adj/ adv-er + than + S/ O..

`+` Tính từ dài: S + V + more adj/ adv + than + S/ O.. 

`+` v + adv

`+` adj + n