Question

The principal (announce) the exam dates (present perfect)​

Answer 1

Answer:

the exam dates are being announced by the principal

Explanation:

Answer 2

Answer:

The given sentence is said to turn into Present Perfect Tense and it is : -

• The Principal has announced the exam dates.

Explanation :

• Structure of Present Perfect Tense ( affirmative ) : Subject + auxiliary verbs - have / has + third form of main verb + object : They have done it.

• Here in the given sentence 'the principal' is subject, 'has' is helping verb, 'announced' is main verb and it is past participle form of 'announce', 'the exam dates ' is object. 'The principal' is third person singular number that is why 'has' is helping verb here.