4.though有時指假設的情況,不指事實,從句用虛擬語氣；although不能這樣用.如：
　　Einstein cared little for money,though he could have been very rich.盡管愛因斯坦本可以成為非常富有的人,但他對金錢卻不感興趣.(though引導的情況是假設的而不是事實.）
　　He will never do such a thing though he (should) be forced to.即使強迫他,他也決不會干這樣的事.（注意：不能用is）
5.though引導的從句,可用倒裝語序,即把從句中的表語或狀語放到though之前；although卻不能這樣用.如：
Young though she is,yet she is fit for the job.（=Young as she is,yet she is fit for the job.）盡管她很年輕,可她還是勝任這項工作的.
6.though從句的主謂語若是系表結構時,可以省略從句主語和be動詞.如：
　　Though alone,he is happy.雖然他獨自一人,卻很幸福.
注意：Though loving him,I can not help him.是錯句.因為從句不是be構成的系表結構作謂語.應改為：Though I love him,I can not help him.或Though fond of him,I can not help him.
7.though還可與別的詞結合使用,如even though,as though等；although則無這種搭配功能.如：
　　I’ll go and help them even though I stop my work.即使我停下自己的活不干,我也要去幫助他們.
8.though還可作并列連詞,相當于and yet（然而,可是）,它引導的分句常對另一分句起補充說明作用；although則無這種用法.如：
　　I wouldn’t like to go to the evening,though they will invite me to.我不想去參加晚會,可是他們要請我去.
　　They now can do most of the things people can do,though most scientists agree that computers can not completely take the place of humans.人們能做的大部分工作,計算機現(xiàn)在都能做,然而大多數(shù)科學家認為,計算機并不能完全代替人類.
9.though可用作副詞,放在詞尾.although卻不可這樣用.如：
　　He said he would come,he didn’t,though.他說要來卻沒來.
參考百度文庫,下面有地址連接可以好好看看