Memory SuperlativesVersion en ligne Expressions such as by far, relative clauses and infinitive to add infromation par Ailyn Chavez .. a part of the sentence that adds infromation. Usually relative clases begin with the words... ...a relative clause ... describe something that is at the upper or lower level when, which, that, whose,etc. We can express big margin using... we add more emphasis using... ...-est. Instead of using "more" for superlatives we use.... Superlatives are used to... .. "the most" A relative clause is... English is by far... we add more infromation with... ... the most difficult class of all. The ending for superlative adjectives is... We can identify an infinite phrase with the word.... ...to ... an infinite phrase ... by far