failed后加什么

failed后加动词不定式。
failed：
adj、失败的;不成功的。
v、失败;未能(做到);未做;未履行(某事);不及格;评定不及格。
fail的过去分词和过去式。

Several students failed to reach the required standard、

有几名学生没有达到规定的'标准。

The government has failed to reverse the economic decline、

政府未能扭转经济滑坡的趋势。

She failed to get into art college、

她未能进入艺术学院。

The government failed to keep its promise of lower taxes、

政府未能兑现减税的承诺。

The project failed for want of financial backing、

这个项目由于缺少财政支援而告吹。