1. I talk less comfortably than Tom.
I don't talk as comfortably as Tom.
I don't talk so comfortably as Tom.
3. She plays tennis better than we (do).
She doesn't play tennis as badly as we (do).
4. I suggest preserving this tradition.
I suggest that we should preserve this tradition
How about preserving this tradition.
5. Jack wondered whether or not he should make friends with that man then.
6. Due to the wonderful trip, we didn't want to finish.