We use suffixes -or/-er/-ist/-ician to form new words with meaning of a person who does something:
originate (v) äàâàòü íà÷àëî - originator (n) àâòîð, èíèöèàòîð: Who is the originator of his plan?
create (v) òâîðèòü, ñîçäàâàòü - creator (n) òâîðåö, ñîçäàòåëü (one who create): Einstein was the creator of the theory of relativity.
Biology (n) áèîëîãèÿ - biologist (n) áèîëîã: The first biologist who saw a live cell with a microscope was Antonie van Leeuwenhoek, in 1674.
reality (n) äåéñòâèòåëüíîñòü– realist (n) ðåàëèñò: I'm a realist – I knew there was no way I could win.
mathematics (n) ìàòåìàòèêà – mathematician(n) ìàòåìàòèê: He worked as mathematician at this University.
Ex.1. Form new words using suffixes. Use dictionary to check yourself.
senate – senat__, art – art__, chemistry – chem__, dentistry – dent__, guitar – guitar__
radiography – radiograph__, journal – journal__, astronomy – astronom__, linguistics – lingu__, obstetrics – obstetric__, keep house – housekeeper, law – lawy__, library – librar__, pediatrics – pediatric__, comedy – comed__, physic – physic__, politics – politic__, novel – novel__, nutrition – nutrition__, philanthropy – philanthrop__, teach - teach__, piano – pian__, psychiatry – psychiatr__, psychology – psycholog__, translate – translat__, racism – rac__, reception – reception__, therapy – therap__, beauty – beautic__, magic – magic__, grammar – grammar__, guard – guard__, history – histor__, orthodontia – orthodont__, optometry – optometr__, pharmacy – pharmac__, statistics – statisti__, technical – techni_, vegetable – vegetar__, science – scient__, veterinary – veterinar__, contract – contract__, learn - learn__, consume – consum __, spesk – speak __, plant – plant__.
Ex.2. Complete the sentences, choose the valid variant.
1. She's a famous scient__ (a. ician, b. ist, c. ism). 2. My brother is a music__ (a. ist, b. ant, c. ian). 3. He's a tax account__ (a. ist, b. ant, c. er). 4. That politician is a commun__.( a. ism, b. ist, c. ician).5. He is an evolution__ (a. ician, b. ist, c. ism ) and believes Darwin’s theory is true.