 |
Ejemplos |
|
|
|
verbo auxiliar |
perífrasis |
perífrasis en
el past perfect |
|
can
=> |
to be able to |
had been able to |
|
may
=> |
to be
allowed to |
had
been allowed to |
|
must
=> |
to have to
to be obliged to
to be forced to
to be compelled to |
had had to
had been obliged to
had been forced to
had been compelled to |
|
shall => |
to be
to |
had
been to |
|
will =>
|
to want to
to wish |
had wanted
to
had wished to |