The passive voice is formed using a form of 1be2 followed by the past participle of the verb. For example3 4The book is written5 6present simple78 9The book was written10 11past simple1213 or 14The book has been written15 16present perfect17. In progressive forms18 you use 19being20 21e.g.22 23is being written242526 and in perfect tenses27 28been29 30e.g.31 32has been written3334. In a passive sentence35 the object of the active sentence becomes the subject36 and the person who does the action can be added using 37by3839 but that40s optional.

Apuntes

The passive voice is formed using a form of "be" followed by the past participle of the verb. For example: "The book is written" (present simple), "The book was written" (past simple), or "The book has been written" (present perfect). In progressive forms, you use "being" (e.g., "is being written"), and in perfect tenses, "been" (e.g., "has been written"). In a passive sentence, the object of the active sentence becomes the subject, and the person who does the action can be added using "by", but that’s optional. The German verb "lassen" can be translated into English in several ways depending on the meaning. If you mean to allow or permit, you use "let" or "allow" – for example, "She let him go." If you mean to have something done, use "have + object + past participle", like "I had my car washed." If someone is made to do something, you say "He was made to go." The structure depends on whether you’re talking about giving permission, causing something, or ordering someone to do something. To change an active sentence into a passive one, move the object of the active sentence to the subject position. Then change the verb into the correct passive form. The person or thing doing the ...