Simple Request!!

[Dally]

what are the main differences between using present perfect and present continuous .Also,past perfect and past continuous??
And when we can use them?
please tell me because I always failed to use them corectelly

[RonBee]

Let's take one thing at a time. It's easier that way.

what are the main differences between using present perfect and present continuous

What are the main differences between present perfect and present continuous?

With present perfect we use present tense, but it is a finished action. Example: "We have done it." With present continous it is an ongoing action. Example: "We are doing it."