第一个错误把Iwasrunninglate改成Iamrunninglate.halfanhour这个错误不是特别需要改因为两个都可以词语的排列方式让这句话读起来很别扭我建议你整句话都改 　　但是保留原意只把顺序稍微变变 　　Iamstillrunninglateforanappointmentforadinnerwithmywifeandit'salreadyseventhirty. 　　或Iamrunninglateagainforadinnerappointmentwithmywifewhenit'salreadyseventhirty. 　　或Iamrunninglatewithmywifeforadinnerappointmentwhenit'salreadyhalfanhourtoeight.这三个都是正确的你任意选一个你觉得读起来语感最好的我建议你选2（3也不错） 　　第二个把意思表达得更完整把runninglate和already的表达意识表达出来了.