What is the formula of past perfect tense,present perfect continuous tense and simple future tense?
Following are the formulas for the mentioned tenses:
Past Perfect:
Subject+ had+ III form of verb
For example: She had returned before I arrived.
Present Perfect:
Subject+ has/have+ III form of verb
For example: She has returned.
Simple Future:
Subject+ will/shall+ I form of verb
For example: She will return.