1. I have never been to Sa Pa before. (ever)
This is the first time I have ever been to Sa Pa.
2. The last time I saw him was in 2010. (seen)
I haven't seen him since 2010.
3. She has never seen the more amazing hill. (most)
It’s the most amazing hill she has ever seen.
4. The weather in Sahara is hotter than in Sydney. (as)
The weather in Sydney is not as hot as the weather in Sahara.
5. They moved to New York in 2004. (lived)
They have lived in New York since 2004.
6. We haven’t been to Hanoi for three years. (went)
The last time we went to Hanoi was three years ago.
7. No other tower in England is as famous as Big Ben. (the)
Big Ben is the most famous tower in England.
8. London is a lot older than New York. (modern)
New York is more modern than London.