otherthan的用法归纳如下：
1、other than用作介词
He has no friend other than you.
他除你之外就没有别的朋友了。
The old man wanted to see nobody other than his grandson.
除了他的孙子之外，这个老人谁也不想见。
The tall figure that you saw was none other than our manager.
你所见的那位身材魁梧的先生不是别人正是我们的经理。
2、other than用作连词
He never speaks to me other than to ask for something.
他除了向我要东西，从不跟我说话。
She seldom appears other than happy.
她总是看起来很幸福。
other than有两种意思：
1、是用来表示否定意义，即“不同于（＝different from)，非（＝not)"。
The truth is quite other than what you think.
事实真相和你们想的完全不一样。
Certainly, my associates and pursuits shall be other than they have been.
当然，现在我所来往的人，我所追求的事物，将和以前不同。
She seldom appears other than happy.
她总是看起来很幸福。
2、是用来表示排除意义，即“除了”，相当于except。（一般用于否定陈述后）除了?以外。
There is nobody here other than me.
除了我以外没有别人。
You can go there other than by swimming.
除了游泳以外你无法到哪里。