Regular verbs always end in -ED

Irregular verbs always have double letters

The word READ is spelt the same in present and past

The word READ is pronounced the same in present and past

The past tense of SIT is SEAT

The auxiliary DID is always followed by an INFINITIVE

Is this corect? "I didn't knew his name."

Is this correct? "Did you buy some milk?"

Is this correct? "Did you watched the match last night?"

The word AGO always refers to the past

The word AGO always goes at the end of a sentence in present

The word AGO always goes at the end of a sentence in past

Is this correct? "The president went to France ago six months."

Is this correct? "He graduated six months ago."