be +
3
(Passive)
be + V ing
(Progressive)
have +
3
(Perfect)
modal
+1
(Modal)
The
apple
is
eaten by John. (Present tense)
The
apple
was eaten by
John. (Past tense)
The
apple
is
being eaten by John.
(Present Progressive)
The
apple
was being
eaten by John. (Past Progressive)
The
apple
has
been
eaten by John. (Present Perfect)
The
apple
had
been
eaten by John. (Past Perfect)
The
apple
has been
being
eaten by John. (Pres. Perfect Progressive)
The
apple
had been
being
eaten by John. (Past Perfect Progressive)
The apple
will
be
eaten by John. ( Future/Modal)
The apple is going
to
be
eaten by John. (Future/Modal)
The apple
must
be
eaten by John. (Modal)
The apple
must have
been
eaten by John. (Past Modal)
The apple
must have
been being
eaten by John.
(Combination)
*Note, to simplify things, we refer to the forms of the verbs with numbers, as follows:
1 base form (be, go, do)
2 past form (was/were, went, did)
3 past participle (been, gone, done)