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HAVE + Subject ( I, You, We, You, They ) + V3 ( third form of main verb – past participle ) HAS + Subject ( He, She, It ) + V3 ( third form of main verb – past participle )
English

The present perfect progressive tense is used for a continuous activity that began in the past and continues into the present, or a continuous activity that began in past but has now finished (usually very recently)
English

The present perfect continuous tense (also known as the present perfect progressive tense) shows that something started in the past and is continuing at the present time. The present perfect continuous is formed using the construction has/have been + the present participle (root + -ing).
English

The future perfect tense is only for actions that will be complete before a specified point in the future. In other words, the action you're talking about must have a deadline. If you don't mention a deadline, use the simple future tense instead of the future perfect tense.
English

The future perfect tense is used to demonstrate an action which is promised to be done by a certain time in the future. Structure: Subject + shall/will + have + verb in the past participle
English

The past perfect tense is used to show that something happened before another action in the past. It can also be used to show that something happened before a specific time in the past.
English

Structures: Subject + had + past participle form of the main verb + before + subject + simple past tense
English

The simple future is a verb tense that's used to talk about things that haven't happened yet. This year, Jen will read War and Peace. It will be hard, but she's determined to do it. Use the simple future to talk about an action or condition that will begin and end in the future
English

Future Perfect Tense is used to express an action which, the speaker assumes, will have completed or occurred in the future.This tense is also sometimes used to express completion of an action in future before another activity happens. e.g. She will have learnt the Chinese before she moves to China.
English

Use have/has + been + ing. Example: It has been raining, and the street is still wet.