1. He is taller than me.
⇒ I'm shorter than him.
2. One red pen is worth more than the other red pen.
⇒ One red pen is not as valuable as the other red pen.
3. She is the prettiest out of the other 3 girls.
⇒ In the remaining three girls there is no one prettier than her.
4. My sister swims better than me.
⇒ I swim worse than my sister.
5. The road to Hanoi is farther than the road to Thai Binh, right?.
⇒ The road to Thai Binh is closer than the road to Hanoi, right?