在英语中，状语是指用来修饰动词、形容词或者副词的成分。在某些情况下，我们可以省略状语，只保留主语和谓语，这种句子就是状语省略句。下面是一些状语省略句的例子：
- When will the train arrive? (When it will arrive)
- Although tired, he kept working. (Although he was tired)
- Having finished his homework, he went to bed. (After he had finished his homework)
- Before leaving, please turn off the lights. (Before you leave)
这些例子中，状语被省略掉了，但是句子的意思仍然可以清楚地表达出来。状语省略句在英语中很常见，但是要注意使用的场合和语境，以免造成歧义。
希望这些例子能够帮助大家更好地理解状语省略句在英语中的应用。记住，多多练习，才能更好地掌握语言技能！
