The Tenses
Conjugation
100

Here and now.

Present

100

The first person singular conjugation of TO BE (present tense).

I AM

200

Things that were.

Past

200

The third person singular of TO SING.

He/she/it SINGS.
300

Things that will happen.

Future

300

The first person plural conjugation of TO BE (past tense).

We WERE

400

Things that have happened recently.

Present perfect

400

If there is only one subject in the sentence, this is the grammatical case that should be used.

Singular

500

Things that are still happening.

Present Continuous

500

If there are two or more subjects in the sentence, this is the grammatical case that should be used.

Plural