...ed | had+...ed |
will | would |
can | could |
must | had to |
check | checked |
helped | had helped |
came | had gone |
ago | before |
these | those |
i will | he/she was going to |
may | might |
was | had been |
don't | didn't |
didn't | hadn't had |
i'm | was |
i'm not | wasn't |
have | had |
had been | had been |
reads | read |
should | should |
today | the following day |
don't | not to |
this | that |
the | that |
here | there |
tonight | that night |
must be | must have been |