The simple present tense for "sow" is: I sow, you sow, he/she/it sows, we sow, they sow.
The past tense of the word sow is sowed sown sowing sows
The present participle is always verb + ing. swimming, sewing, looking, running etc
The past tense of "sow" is "sowed" and the past participle is "sown" or "sowed" depending on the context.
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
Yesterday I sowed some seeds. Today I have sown some more.
"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