I/you/we/they demonstrate. He/she/it demonstrates. The present participle is demonstrating.
The present tense of "demonstrate" is "demonstrates" for third person singular (he/she/it) and "demonstrate" for all other subjects.
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.
The present tense of "will be" is "am/is/are." For example, "I am," "he is," "they are."
Past tense I had Present tense I have Future Tense I will have
"Has" is in present tense. The past tense is "had".
The past tense of demonstrate is demonstrated.
The verbal phrase is 'has taught.' So, the answer is the present perfect tense. It consists of have/has + the past participle of the verb.
The verb is is the present tense.
Present tense is used to describe things that are happening now or are generally true. Past tense is used to describe things that have already happened.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
The present tense of "will be" is "am/is/are." For example, "I am," "he is," "they are."
Past tense I had Present tense I have Future Tense I will have
"Has" is in present tense. The past tense is "had".
Present perfect tense.
the present of did is didnt Do is the present tense of did. Didn't is the past negative form
"Is" is present tense, while "was" is past tense.
"you do" is present tense. The past tense is "you did" and the future tense is "you will do".