Isolated word form, whether auditory or visual, is not enough to convey language information. We can work our time frames only in context.
There is a use in language we could compare to a natural phenomenon on Earth, namely gravitation. It can help us choose on the time frame and decide between the Perfect or Simple Aspects. More→
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.
The Affirmative, Interrogative, Negative, and Negative Interrogative, for the Simple, Progressive, and Perfect Aspects.
To think about grammatical time, we do not have to feel bound to fields and land travel, even if only symbolically. We can imagine a bald eagle ON Mount Elbert. He nests IN a valley, flies TO the mountain top, and stays AT the summit, for warm days. The eagle route has four types of reference. ■→More
Whether English is spoken or written, verb forms be and have are the most usual to occur. We can extract patterns for the Simple, Progressive, and Perfect. ■→More
Verbs may change in shape for the PRESENT, PAST, and FUTURE, and not all are regular in this. We exercise verb 1st and 2nd forms in the fields of time. ■→More
Some verb forms can work as head verbs as well as auxiliaries. Our head verbs can head verb phrases. They tell the activity or faculty. Auxiliaries always require another verb. We can use a simple color code, to tell head verbs from auxiliaries easy.