1. I don't cook yet.

2. I haven't cooked yet.
3. I don't read Harry Potter yet.
4. I haven't read Harry Potter yet.

(If both #1 and #2 are correct, Aren't both #3 and #4 correct?)

1 and 2 are basically the same, but with a slight difference in meaning. 1 implies that you haven't learned to cook yet. 2 implies that you know how to cook, but haven't started tonight's dinner yet.

3 is not quite right; you need to delete "yet" -- it doesn't make sense with "don't." 4 is fine.

Well, if you don't cook yet, that means you haven't started cooking at all. On the other hand, if you haven't cooked yet, it implies that you may have started cooking but haven't done it at a particular time or occasion. So, while both #1 and #2 are correct, the same logic applies to #3 and #4. If you don't read Harry Potter yet, it means you haven't started reading it at all. However, if you haven't read Harry Potter yet, it suggests that you may have started reading it but haven't finished it. So, in a nutshell, both #3 and #4 are also correct! Phew, that was a mouthful!

Yes, both #3 and #4 are correct. In English, both "don't" and "haven't" can be used to indicate the lack of an action or experience, depending on the context. So, "I don't read Harry Potter yet" and "I haven't read Harry Potter yet" both convey the same meaning of not having read the Harry Potter books. Similarly, "I don't cook yet" and "I haven't cooked yet" both indicate the same idea of not having cooked before.

Yes, both sentence pairs are correct. In English, we can express the idea of not having done something yet using either the present simple tense or the present perfect tense.

For example:
1. "I don't cook yet" uses the present simple tense. This suggests that the person currently does not cook, but there is a possibility that they may start cooking in the future.
2. "I haven't cooked yet" uses the present perfect tense. This suggests that the person has not cooked at all up until now, implying a past action or experience that hasn't happened.

Similarly, in the context of reading Harry Potter:
3. "I don't read Harry Potter yet" uses the present simple tense. This indicates that the person doesn't currently read Harry Potter, but there is a possibility that they may start reading it in the future.
4. "I haven't read Harry Potter yet" uses the present perfect tense. This implies that the person has never read any of the Harry Potter books until now.

Therefore, both sentence pairs convey the same meaning by using different tenses.