other than ,more than,less than,rather than到底有什么区别

other than
　　意为"不同于,非,除……之外".
　　The actor performed other than perfectly.演员的表演远非尽善尽美.
　　He never speaks to me other than to ask for something.他除了向我要东西之外,从来不和我说话.
　　more than
　　意为"极其,超出,超出……的".
　　They were more than pleased to help.他们非常愿意帮忙.
　　Some of the stories were really more than could be believed.有些故事实在不能相信.
more...than
　　①意为"与其……倒不如说".
　　Joan is more diligent than clever.与其说琼聪明,不如说她勤奋.
　　②意为"比……更……".
　　Joan is more clever than John.琼比约翰更聪明.
less...than
　　与其说……不如说……
　　Experience shows that success is due less to ability than to zeal.经验表明,成功与其说是由于能力,不如说是由于热情.
　　rather than
　　①rather than与would,had等词连用,表主观愿望,意为"宁愿……而不愿……",后面接不带to的动词不定式.
　　He had rather go than stay to be interviewed.他宁愿走,也不愿留下来接受采访.
　　Rather than travel by air,I'd prefer a week on a big liner.我宁愿乘一周的巨型班轮,也不愿坐飞机.
　　②rather than也可以连接与谓语动词时态一致的动词形式,表示客观事实,而不是主观愿望,解释为"是……而不是……".
　　He stayed rather than went.他留下来没走.
　　③rather than还可以表示两种说法的正确程度,"与其说……不如说……".
　　He is an artist rather than a philosopher.与其说他是哲学家,倒不如说是艺术家.