前面加冠词a，例如：
1、It is essential that we present a united front.至关重要的是我们要表现得团结一致。
2、The Channel Tunnel has enormous symbolic significance for a united Europe.英吉利海峡隧道对于建立一个统一的欧洲具有重大的象征意义。
3、A United Nations aid convoy loaded with food and medicine finally got through to the besieged town.一支联合国援助车队载着食物和药物终于抵达了被围困的市镇。
