Here are the rewritten sentences using the provided words:

1. Tim is better at English than Susan.
→ Susan isn't as good at English as Tim.

2. We spent five hours getting to London.
→ It took us five hours to get to London.

3. Listening to music gives him pleasure.
→ He enjoys listening to music.

4. She is more beautiful than her younger sister.
→ Her younger sister is not as beautiful as she is.