positive: 1 one<br>2 two<br>3 three<br>4 four<br>5 five<br>6 six<br>7 seven<br>8 eight<br>9 nine<br>10 ten<br>11 eleven<br>12 twelve<br>13 thirteen<br>14 fourteen<br>15 fifteen<br>16 sixteen<br>17 seventeen<br>18 eighteen<br>19 nineteen<br>20 twenty
negative: 1:one [wʌn];2:two [tuː];3:three [θriː];4:four [fɔː];5:five [faɪv];6:six [sɪks];7:seven ['sev(ə);8:eight [eɪt];9:nine [naɪn];10:ten [ten];11:eleven [ɪ'lev(ə)n];12:twelve [twelv];13:thirteen [θɜː'tiːn; 'θɜːtiːn];14:fourteen [fɔː'tiːn; 'fɔːtiːn];15:fifteen [fɪf'tiːn; 'fɪftiːn];16:sixteen [sɪks'tiːn; 'sɪkstiːn];17:seventeen [sev(ə)n'tiːn; 'sev(ə)ntiːn];18:eighteen [eɪ'tiːn; 'eɪtiːn];19:nineteen [naɪn'tiːn; 'naɪntiːn];20:twenty ['twentɪ]。