1. Jack is younger than he looks.

=> Jack isn’t as old as he looks.

2. I didn’t spend as much money as you.

=> You spend more money than me.

3. The station was nearer than I thought.

=> The station wasn’t  as far as I thought.

4. The meal didn't cost as much as I expected.
=> The meal costed less than I expected.

5. I watch TV less than I used to.

=> I don’t watch as much as I used to.

6. Karen’s hair isn’t as long as it used to be.

=> Karen used to have longer hair than she does now.

7. I know them better than you do.

=> You don’t know them as well as I do.

8. There are fewer students in this class than in the other one.

=> There aren’t as less students in this class as in the other one.