是一般过去时。was加过去分词时一般过去时的被动语态。被动语态指主语和谓语的关系是被动；或者主语是谓语动作的承受者。被动语态的结构：be+done，这里的动词就是过去分词。语态说明了主语和谓语的关系，任何一个句子都有时态的使用。所以不同时间，不同关系，使用的被动语态形式也不同。
扩展资料。
使用被动语态应注意：
1、不及物动词无被动语态。
what will happen in 100 years
the dinosaurs disappeared about 65 million years ago
2、有些动词用主动形式表示被动意义。
this pen writes well
this new book sells well
3、感官动词或使役动词使用省略to的动词不定式，主动语态中不带to，但变为被动语态时，须加上to
例：make somebody do something→somebody+ be +made to do something
see somebody do something→somebody +be +seen to do something
a girl saw my wallet drop when she passed by.→my wallet was seen to drop by a girl when she passed by
the boss made the little boy do heavy work.→the little boy was made to do heavy work by the boss
扩展资料。
使用被动语态应注意：
1、不及物动词无被动语态。
what will happen in 100 years
the dinosaurs disappeared about 65 million years ago
2、有些动词用主动形式表示被动意义。
this pen writes well
this new book sells well
3、感官动词或使役动词使用省略to的动词不定式，主动语态中不带to，但变为被动语态时，须加上to
例：make somebody do something→somebody+ be +made to do something
see somebody do something→somebody +be +seen to do something
a girl saw my wallet drop when she passed by.→my wallet was seen to drop by a girl when she passed by
the boss made the little boy do heavy work.→the little boy was made to do heavy work by the boss