I/You/We/They open. He/She/It opens. The present participle is opening.
"Open" is already in the present tense.
The present tense of "push" is "push." For example, "I push the door open."
It is the present tense.
You open / You are opening.
Opening is the present participle of open.
The verb is is the present tense.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have
The present perfect tense of open is:I/You/We/They have opened.He/She/It has opened.
"Has" is in present tense. The past tense is "had".
No 'is' is present tense. am/is/are = present tense was/were = past tense