The present participle of to cook is cooking.
Here are two examples of the present participle used in the present progressive tense:
I am cooking.
You are cooking now.
Cook or cooks is the simple present tense.
Cook is the present tense.
It is cook, e.g. Tommorrow I am going to cook eggs and bacon for breakfast.
I/He/She/It was cookingWe/You/They were cooking
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)
Let's look at the verb 'sing'. Past tense - sang Past participle - sung Present tense - sing/sings Present participle - singing Future tense - will sing
Past tense I had Present tense I have Future Tense I will have
Present Perfect - Have/Has cooked. Past Perfect - Had cooked. Future Perfect - Will have cooked.
"Has" is in present tense. The past tense is "had".
No 'is' is present tense. am/is/are = present tense was/were = past tense
Present tense