Bonjour,
1. Lincoln had many setbacks, but he finally reached the highest office in the land.
high ( adjectif court ) ==> the +adj-est
2. Despite his childhood difficulties, Einstein became the most famous scientist the world has ever known.
famous ( adjectif long ) ==> the most + adjectif
3. Silicon Valley is the world’s biggest concentration of start-ups and high-tech firms.
4. If you’re looking for the least expensive products, you should go to a low-cost supermarket.
Attention piège : l’adjectif « expensive » est un adjectif long. Son superlatif est donc : the most + adjectif (the most espensive = les plus chers )
Mais la phrase deviendrais « If you’re looking for the least expensive products, you should go to a low-cost supermarket. » : ce qui est incorrect au niveau du sens : « Si vous recherchez les produits les plus chers, vous devriez aller dans un supermarché à bas prix ( low cost ) » ...
==> Il faut donc utiliser the least expensive ( = les moins chers )
5. The country which is the furthest / farthest away from England is New Zealand.
far ( adjectif irrégulier )==> farthest / furthest
Si l’on parle d’une distance géographique ( ce qui est le cas ici, il s’agit de la distance géographique entre l’Angleterre et la Nouvelle Zélande ) on peut utiliser farthest ou furthest.
-----------------------
1. She was jobless, poor single mother and yet she is now the richest and most popular author of children’s book.
==> J.K.Rowling
2. Despite being originally made with a glue which wasn’t sticky enough, today it is one of the world’s most useful office products.
==> the Post-it
3. He was fired from a newspaper for lacking imagination nevertheless he became one of the world’s best-known cartoon and film producers.
===> Walt Disney
4. Although he couldn’t speak until he was almost four, he is now considered as the 20th century’s greatest scientist.
===> Albert Einstein
