加ful后缀的单词词性

　　He gave me a long, doleful look.

　　他眼神悲伤地久久望着我。

　　The smile disappeared to be replaced by a doleful frown.

　　笑容消失了，取而代之的`是哀伤的蹙眉。

　　The dog looked at me with a doleful expression.

　　那只狗看着我，满脸悲哀。

　　Other game manufacturer is unwilling also and doleful.

　　其它游戏厂商也不甘寂寞。

　　I once thought, in a doleful night.

　　我曾经想过在寂寞的夜里；