cấu trúc:
S1 + S-adj + er/ S-adv- er + than + S2 + Axiliary V
S1 + S-adj + er/ S-adv- er + than + O/ N/ Pronoun
1 more fluently
2 more happily
3 earlier
4 later
5 more grafully
6 louder
7 better
8 more slowly
9 higher
10 farther
11 more carfully
12 often
13 faster
14 worse
15 harder