The document discusses the passive voice and how it is formed and used. The passive voice is formed using the verb "to be" and the past participle of the main verb. It is used when the action is more important than the performer or when the subject is obvious or not important. The passive voice can be formed in all tenses by changing the verb "to be" to match the tense and using the appropriate past participle.

1. PASSIVE VOICE

4. The teacher explained the passive voice. subject main verb object The passive voice was explained by the teacher. subject to be + past agent participle

5. Passive Active Tenseí An e-mail was being written. I was writing an e-mail. Past continuous An e – mail was written. I wrote an e-mail. Simple Past An e-mail is being written. I’m writing an e-mail. Present Continuous An e-mail is written . I write an e-mail. Simple Present

6. Trees shouldn’t be cut down. Modal + be + past participle MODAL VERBS That tree is going to be cut down on Monday. Am/ is/ are + going to + be + past participle GOING TO That tree will have benn cut down by this time tomorrow. Will+have + been + past participle FUTURE PERFECT That tree will be cut down tomorrow. Will + be + past participle FUTURE SIMPLE A tree had been cut down . Had+ been+ past participle PAST PERFECT A tree has been cut down in my street. Have/ has + been + past participle PRESENT PERFECT A tree was being cut down yesterday afternoon. Was/ were + being + past participle PAST CONTINUOUS A tree was cut down yesterday. Was/were+ past participle PAST SIMPLE A tree is being cut down . Am/ is/ are + being+ past participle PRESENT CONTINUOUS Trees are cut down to make paper. Am/ is/ are + past participle PRESENT SIMPLE