Compare two thinks. 1.a tree is (tall) then a human. 2. nowadays life is (difficult) than it used to be. 3. france is (far) to russia than germany. 4. john`s english is (good) than pat`s. 5. their habitat is (healthy) than ours. 6. gold is (expensive) than silver.
2. more difficult
3. further
4. better
5. healthier
6. more expensive