2 câu so sánh bằng:

I am as tall as my sister.

My sister works as hardworking as my mother.

(Form: S1 + am/is/are +as+ adj + as + S2

            S1 +       V        + as + adv + as + S2)

2 so sánh không bằng:

I am not as beautiful as my sister.

I don't cook as good as my sister.

(Form: S1 + am/is/are + not +as+ adj + as + S2

            S1 +don't/doesn't+   V   + as + adv + as + S2)

3 so sánh hơn

My sister is more beautiful than me.

I am cook better than my sister.

(form: 

         With short adj: S1 + am/is/are + adj-er + than + S2

                           adv: S1 + V + adv-er + than + S2.

         With long adj: S1 + am/is/are + more + adj + than + S2

                          adv: S1 +    V          + more + adv + than + S2)

3 so sánh tuyệt đối:

My sister is the most beatiful in my family.

My mother cooks the best in my family.

(form;

        with short adj: S1 + am/is/are + the + adj-est 

                         adv; S1 + V      + adv-est

        with long adj: S1 + am/is/are + the most + adj-est

                        adv: S1 + V + the most + adv-est)