27. He is the tallest boy in his class.
→ No one in in his class is taller than him
28. This is the most interesting film of all.
→ No other films are more intersting than this one.
29.No cars in the world are more expensive than Japanese ones. 
=>Japanese cars is the most expensive car in the world.
30. This exercise is easier than that one.
→ That exercise is not as easy as than this one.
31. He drives more carefully than Jack does. 
→ Jack does not drive as carefully as him.
32. No one in the group plays better than he. 
→ He can play better than anyone in the group.
33. No hotel in the city is as comfortable as this. 
→ This hotel is the the most comfortable in the city.
34. Other oceans in the world aren’t as large as the Pacific one.
→ The Pacific Ocean is the largest ocean in the world.