1) as far as I know; 2) to the best of my knowledge; 3) for all I know; 比如：As far as I know, the plan hasn't changed. 据我所知，计划没变。He's still single to the best of my knowledge. 据我所知，他现在还是单身。He's broke for all I know. 据我所知，他身无分文了。作者: kobe 时间: 2013-3-20 09:01
as far as I know作者: 薇生物 时间: 2013-3-20 19:24
I am still single to the best of my knowledge.作者: guoguoo0660 时间: 2013-4-16 18:22
.gif)