💡 Past simple passive: was/were + past participle. The time marker ‘1985’ shows a finished past action.

💡 Present simple passive: are + past participle. ‘Every month’ shows regular present action; ’employees’ is plural.

💡 Present continuous passive: is/are being + past participle. ‘Right now’ shows an action happening at this moment.

💡 Present perfect passive: have/has been + past participle. ‘Already’ indicates a completed action with present relevance.

💡 Past continuous passive: was/were being + past participle. Shows an action in progress at a past moment.

💡 Modal passive: modal + be + past participle. After ‘must’ we need ‘be’ plus past participle.

💡 Past perfect passive: had been + past participle. Shows an action finished before another past moment (the deadline).

💡 Present simple passive: are + past participle. Describes a general fact; ‘products’ is plural so needs ‘are’.

💡 Modal passive: should + be + past participle. After modal verbs, use ‘be’ plus past participle form.

💡 Present perfect passive: has been + past participle. ‘Since last month’ shows connection between past and present.

💡 Present simple passive needed for regular actions. ‘Are tested’ shows the machines receive the action regularly.

💡 Past continuous passive shows an action in progress at a past moment (when I entered).

💡 Modal passive: must + be + past participle. This structure expresses obligation or necessity.

💡 Modal passive in past: had to + be + past participle. Shows past necessity or obligation.

💡 Present perfect passive with ‘yet’ shows an action not completed up to now, with present relevance.

💡 Past perfect passive shows an action completed before another past action (before I joined).

💡 Present simple passive for rules or general requirements. ‘Are required’ shows visitors receive this requirement.

💡 Present continuous passive shows an action happening now. ‘At the moment’ confirms this timing.