【正文】
. Einstein was one of the greatest ________(science) in history.visitorsspeakersplayerscientistsWe can add er, or and ist to some words (n./v.) to form nouns for people.Verb/Noun+ Suffix Nounspeak + er speakervisit + or visitortour + ist touristSometimes we need to change the ending of the verb/ noun when we add the suffix.dance dancer win winnerpiano pianist science scientist表示人的身份、職業(yè)、國(guó)籍等的后綴 er farmer speaker repo