perfect infinitive

例句：

1. 1. The perfect infinitive is the one that can be used to express a complete action without any additional words.
   完美动词是那些可以表达完整动作而无需任何额外词汇的动词。
2. 2. The perfect infinitive is often used in formal writing or speech to indicate a complete action without any additional words.
   完美动词通常用于正式写作或演讲中，以表示一个完整动作而无需任何额外词汇。
3. 3. The perfect infinitive is also used in some languages to indicate a complete action without any additional words.
   在有些语言中，完美动词也用来表示一个完整动作而无需任何额外词汇。