Our use of the word "relativity" is not about physics or families. It is linguistic. We can acquire the Modal relativity step-by-step, and spare our arrows. Let us remember they indicate the target time, not the verb form.
Modal Expression, especially the Interrogative or Negative, can give us some trouble, unless we approach the matter as science in a field: we analyze the molecules, see how they are doing, and make a model. We can recur to CHAPTER 5, as well as compare APPENDIX 4. 54. We CANNOT skip the exercises. … Continue reading 9.3. DETAIL ON MODAL STRUCTURES
For all tenses, this is always the first element in the verb pattern to change with the time extent (PRESENT, PAST, or FUTURE). It changes the same in our Fields of Time. We can say that it is the form closest to our cognitive ground. It changes the same for our value ON.
Our brains can work with verbal paths as well as visualization. It does not mean we have to stay with the words or visuals, especially forever. These are just to help. Importantly, without knowing where we are about faculties, activities, or states, we could be only repeating formulas after other people.
We can envision our grammar journey as traveling in an abstract dimension. However, we can think about the Cartesian coordinates, just as in our natural, three-dimensional realities.
The Affirmative, Interrogative, Negative, and Negative Interrogative, for the Simple, Progressive, and Perfect Aspects.
The Simple, Progressive, Perfect, and Perfect Progressive, in the Affirmative, Interrogative, Negative, and Negative Interrogative, for the Future, Present, and PAST, and for all grammatical persons.