although的用法是什么(although表示什么)

Althoughhewastired,hewentonworking.

Althoughmanydifficultiesarestillahead,wearedeterminedtomakegreaterachievements.尽管在前面的道路上还有许多困难,但是,我们决心要取得更大的成就.HeoftenhelpsmewithmyEnglishalthoughheisquitebusy.尽管他相当忙,但是还常常帮我学英语.不能说：Althoughhewasold,butheworkedhard.应把but去掉.当然,保留but而去Although也可.注意:although的几不:although不能指假设的情况although不能作并列连词although不能作副词,放在词尾