This post will cover the present tense in the middle and passive voice, across the indicative, infinitive, subjunctive, optative and imperative moods. The passive and middle present share the same forms, so must be distinguished by context alone.
As in the active voice, the infinitive, subjunctive, optative and imperative moods refer to aspect only, and not time. Infinitives also do not provide person or number.
The Present Passive/Middle, in all the moods presented in this post, is based on Principal Part 1, the 1st Person Singular Present Indicative Active. Take the PP1 and remove the ending -ω. This will leave you with the present tense stem. To this ending add the appropriate ending for the person, number and mood (assuming tense and voice for this post are fixed, of course).
|1st Person Singular (1ps)||-ομαι||-ωμαι||-οιμην|
|2nd Person Singular (2ps)||-ῃ/-ει||-ῃ||-οιο||-ου|
|3rd Person Singular (3ps)||-εται||-ηται||-οιτο||-εσθω|
|1st Person Plural (1pp)||-ομεθα||-ωμεθα||-οιμεθα|
|2nd Person Plural (2pp)||-εσθε||-ησθε||-οισθε||-εσθε|
|3rd Person Plural (3pp)||-ονται||-ωνται||-οιντο||-εσθων|