Is tense matter for use of this & that

By this time , i was done my project .
By this time , I will complete my project.
Is this right way to use of this & that

And what do the tense matter for use of this & that .

If yes then please teach me
i want some example for these

Hello akvs00001,

Yes, the tense do matter if you write a sentence or speak a sentence. There are three types of tenses : Past Tense, Present Tense, Future Tense.

  1. Past Tense
    Here, you will write the sentence which you have already done. Let’s take an example.
    Eg. By that time, I had completed my project.

  2. Present Tense
    Here, you will write the sentence which you are currently doing. Let’s take an example.
    Eg. By this time, I will complete my project.

  3. Future Tense
    Here, you will write the sentence which you are going to do in future. Let’s take an example.
    Eg. By that time, I will complete my project.