In Present simple^x, Negatives^x, Present perfect^x

Greetings,I have a pretty big favour to ask.I've been struggling with this topic for quite awhile now.It goes without saying that my English "leaves something to be desired".Having in mind the subtle differences that occur from using particular tenses, I have often wondered how the...

I’d like to know if we can mix the present perfect and the simple past and if it’s natural. I noticed that the present simple it’s often used for sentences with already. I already finished it! But not for it negative opposite I haven’t finished it yet! I think for questions both are...

Yes. That's generally true.And the paraphrase I gave is not the only possible one. Paraphrases using the word before are also good. The idea is the same. Once you get the idea that until expresses a temporal relationship involving the continuance of a certain negative state, you...

hello all I will put (write) here all the general forms of the English grammar tenses as I know (understand ) it, I want you to chek it and correct me. Sometimes there is no form (just a speace), I want you to write the general form of the kind of the tense that is detected. I'm so sorry If...