1. I haven't seen him and i haven't heard him speak either.
-> Neither have I seen him nor have I heard him speak
2. Tom arrived late and started complaining.
-> Not only did Tom arrive late, but he started complaining
3. We only learned the truth yesterday.
-> It was not until yesterday that we learned the truth
4. I have not seen a more wonderful building anywhere.
-> Nowhere else have I seen a more wonderful building
5. It is disappointing that we haven't heard from Molly.
-> We are disappointed not to hear from Molly
6. "Well done, I'm so glad you've passed your exam."
-> I congratulated her/ him on passing her/ his exam