### 4.3.1. 常见前缀（Common Prefixes） 1. **un-** (not, opposite of) * unhappy ʌnˈhæp.i * unknown ʌnˈnoʊn * unusual ʌnˈjuː.ʒu.əl 2. **re-** (again, back) * redo riːˈduː * review rɪˈvjuː * return rɪˈtɝːn 3. **in-** (not, into) * incomplete ˌɪn.kəmˈpliːt * invisible ɪnˈvɪz.ə.bəl * inside ɪnˈsaɪd 4. **dis-** (not, opposite of) * disagree ˌdɪs.əˈɡriː * disappear ˌdɪs.əˈpɪr * disconnect ˌdɪs.kəˈnekt 5. **pre-** (before) * preview ˈpriː.vjuː * predict prɪˈdɪkt * preschool ˈpriː.skuːl 6. **mis-** (wrongly) * misunderstand ˌmɪs.ʌn.dɚˈstænd * misplace ˌmɪsˈpleɪs * mislead ˌmɪsˈliːd 7. **non-** (not) * nonstick ˌnɑːnˈstɪk * nonprofit nɑnˈprɑf·ɪt * nonviolent ˌnɑːnˈvaɪə.lənt 8. **over-** (too much) * overeat ˌoʊ.vɚˈiːt * overwork ˌoʊ.vɚˈwɝːk * overheat ˌoʊ.vɚˈhiːt 9. **sub-** (under) * submarine ˌsʌb.məˈriːn * subtitle ˈsʌbˌtaɪ.t̬əl * subconscious ˌsʌbˈkɑːn.ʃəs 10. **inter-** (between, among) * international ˌɪn.t̬ɚˈnæʃ.ən.əl * interact ˌɪn.t̬ɚˈækt * interrupt ˌɪn.t̬əˈrʌpt 11. **trans-** (across, beyond) * transport ˈtræn.spɔːrt * transfer ˈtræns.fɝː * transform trænsˈfɔːrm 12. **under-** (too little, below) * underpaid ˌʌn.dɚˈpeɪd * underestimate ˌʌn.dɚˈes.tə.meɪt * underground ˌʌn.dɚˈɡraʊnd 13. **super-** (above, beyond) * superhuman ˌsuː.pɚˈhjuː.mən * supermarket ˈsuː.pɚˌmɑːr.kɪt * supervisor ˈsuː.pɚ.vaɪ.zɚ 14. **semi-** (half, partly) * semicircle ˈsem.iˌsɝː.kəl * semifinal ˌsem.iˈfaɪ.nəl * semiconscious ˌsem.aɪ.ˈkɑːn.ʃəs/ 15. **anti-** (against) * antibiotic ˌæn.t̬i.baɪˈɑː.t̬ɪk * antifreeze ˈæn.t̬i.friːz * antisocial ˌæn.t̬iˈsoʊ.ʃəl 16. **de-** (down, away from) * devalue ˌdiːˈvæl.juː * defrost ˌdiːˈfrɑːst * decode diːˈkoʊd 17. **en-** (make, put into) * enable ɪˈneɪ.bəl * enrich ɪnˈrɪtʃ * encourage ɪnˈkɝː.ɪdʒ 18. **em-** (cause to) * empower -ˈpaʊr * embrace ɪmˈbreɪs * employ ɪmˈplɔɪ 19. **non-** (not) * nonexistent ˌnɑn·ɪɡˈzɪs·tənt * nonsense ˈnɑːn.sens * nonprofit nɑnˈprɑf·ɪt 20. **mid-** (middle) * midnight ˈmɪd.naɪt * midterm ˈmɪd.tɝːm * midfield ˈmɪd.fiːld