Cách 1:
1: Thailand produces less rice than VN
2: He bought less books than she did
3: I play less sports than my sister
4: The girls plant less trees than the boys
Cách 2:
1: Thailand don't produce more rice than VN
2: He didn't buy more books than she did
3: I don't play more sports than my sister
4: The girls don't plant more trees than the boys