rengöras

In a sentence

• För att fönstren ska bli rena behövde de rengöras ordentligt.

  For the windows to become clean, they needed to be cleaned thoroughly.

  Here, 'rengöras' is used as a passive verb referring to the action of cleaning being done to the windows.

• Bilens motor måste rengöras regelbundet för att fungera effektivt.

  The car's engine must be cleaned regularly to function effectively.

  In this sentence, 'rengöras' is also in the passive form, implying regular maintenance and cleanup of the car's engine.

• Att rengöras är viktigt för att förhindra spridning av bakterier.

  To be cleaned is important to prevent the spread of bacteria.

  Here, 'rengöras' is in an infinitive form acting as the subject of the sentence, emphasizing the importance of the cleaning process.