七年级下册（2012年12月第1版）《Section D》优质课PPT课件下载-益阳市优课

2000 2008

基变序 有规律

one→first two→second three→third

一、二、三 单独记

four→fourth th要从四加起

eight→eighth nine→ninth 八去t,九去e

five→fifth twelve→twelfth ve要用f来代替

twenty→twentieth thirty→thirtieth 几十改y为ie

twenty-one→twenty-first thirty-four→thirty-fourth

若遇几十几，只变个位就可以

1st

2nd

3rd

third

12th

20th

thirty-first

31st

second

twelfth

twentieth

first

5th

8th

9th

ninth

40th

90th

101st

fifth