2. A snail is slower than a crab. (slowly)

⇒ A snail moves more slowly than a crab.

3. My father’s explanation about the subject was clearer than my brother’s. (clearly)

My father explained the subject more clearly than my brother.

4. My cousin is a better singer than I am. (well)

My cousin sings better than me.

5. Phong is a faster swimmer than Phuc. (fast)

Phong swims faster than Phuc.