Concept: indicates the action to be taken or the state of being and the intention, plan or preparation for doing something.

Adverbial of time: tomorrow, the next day (week, month, year …), soon, in a few minutes, from …, the day after tomorrow, etc.

Basic structure: subject+am/is/are+going+do; Will/will+do.

Second, the general present tense:

Concept: a frequently repeated action or behavior, a situation.

Adverbial of time: always, naturally, often, sometimes, every week (day, year, month …), once a week, Sunday,

Basic structure: the prototype of the verb (if the subject is singular in the third person, the verb should be changed to singular in the third person)

Third, the simple past tense

Concept: the action or state that occurred at some time in the past; Habitual and regular actions and behaviors in the past.

Basic structure: be verb; Past tense of action verbs

Fourth, the present continuous tense

Concept: indicates the actions and behaviors that are going on at the present stage or when speaking.

Adverbial of time: now, now, heaven, etc. Listen.

Verb (abbreviation for verb) past continuous tense

Concept: indicates the behavior or action that is happening or going on at a certain time or moment in the past.

Adverbial of time: this time, that time or when yesterday-the predicate verb is an adverbial of time in the simple past tense, and so on.

Basic structure s+was/were+doing

6. The present perfect tense

This usage of the perfect tense is usually used with adverbials of time guided by since or for. For example:

The old man has lived here for more than twenty years.