Prefixes mis-, re-, anti-, ant-.
A prefix (affix) is a word, or letter(s) placed at the beginning of another word (a base word) to adjust or qualify its usage or meaning. 
| 
 Prefixes and their variants 
   | 
 Meanings  | 
 Examples  | 
 Translation of examples  | 
| 
 anti, ant  | 
 against, opposite  | 
 antibiotic, antiaircraft,   | 
 антибиотик,  противовоздушный,   | 
| 
 re  | 
 again, back  | 
 react, recollect, recover, remember, reward  | 
 реагировать, вспомнить, выздороветь, помнить,    наградить  | 
| 
 mis  | 
 bad, wrong; negation  | 
 misfortune, mislead, misplace,  | 
 злоключение, вводить в заблуждение, положить не на место / потерять,   | 
Ex.22. Translate the words: antiseptic, antibody, antibacterial, anticancer, anticipate, anticultural, antinatural, remind, renew, rename, repeat, replace, reserve, respond, retell, revert, review, revolve, misprint, mistake, mistreat, misunderstanding.
Ex.23. Add prefixes to the following words. Complete the sentences using a negative form of the word in brackets.
| 
 1. understand 
2. write 
3. take 
4. spell 
5. enter  | 
 1. ________ + _________ = ____________ 
2. ________ + _________ = ____________ 
3. ________ + _________ = ____________ 
4. ________ + _________ = ____________ 
5. ________ + _________ = ____________  | 
 
1. I'm sorry I _____ her message completely. I simply didn't pay attention (understand). 2. My homework was so bad that I had to _____ it (write). 3. My spell checker corrects a mistake whenever I ______ a word (spell). 4. I don't think I will pass the exam but I can _____ it in September (take). 5. James ____ the conversation and said that it was not true. (enter).