Your test results must be from a test you sat no more than two (2) years before the day of making your application.
However, if you are using an IELTS test to show a secondary applicant’s level of English as ‘functional’, they must have sat the test no more than 12 months before you made your application.
出处:http://www.immi.gov.au/skilled/g ... ibility-english.htm
your IELTS TRF Number to show you have a band score of at least four and a half (4.5) based on all four components.
Important: If you are using an IELTS test to show functional English, it must be from a test sat no more than 12 months before making your application.