backdate的一般过去时为：backdated...

vt.倒填日期，使（付款等）在较早的日期开始生效...

backdate的音标：backdate的英式发音音标为：[ˌbæk'deɪt]backdate的美式发音音标为：['bækˌdet]...

backdate的现在完成时为：backdated...

backdate的现在进行时为：backdating...

backdate的第三人称单数（三单）为：backdates...

Anyone who has overpaid tax will be able to backdate their claim to last April.超额纳税者申领退款可以从去年4月算起。Backdate your invoice to April 1 st.你的发票日期应填到4月1日算起....