Iconic words appearing in the past tense and past continuous tense

1.I can't agree on your plan.

I don't agree with what you said

2. Language markers of present perfect tense

have done sth. This is the core. The time mark is for sometime. Other marks are yet, already.

For example:

I haven't finished my homework yet.

I have finished my homework already.

I have been here for many years.

Language markers for past continuous tense

were/was doing sth. This is the core, referring to what was being done at that time. Time markers then, at that time, etc.

Language markers for the past tense

The verbs are all past tense, time Adverbials also express the past, such as yesterday, in the past, three years ago, etc.

The simple present tense uses the base form of the verb or the third person singular form. Sign words include: every day, evry Sunday, often, always, usually, sometimes, on Sundays, on weekdays, etc.

The present continuous am/is /are+v-ing form. Marker words: now, at the moment Look!, Listen!

Use the past tense of the verb in the past tense. Marking words are: yesterday, last week, last month, last year, two years ago.

Generally, the future tense uses will + v (original form). Marking words: tomorrow, in the future, next week, next Sunday.

Past continuous tense: was/were+doing Marker: at that moment, at this time of yesterday, at eight last night.

Past future tense: would +do There are no marker words and they are usually used in clauses.

Present perfect: have/has + participle of verb. Marker words: ever, never, since, already, yet, before. twice, once, three times.

Past perfect Tense: had + past participle of verb. This tense is the past that happened in the past, that is, what happened before the past. Usually used in subordinate clauses. Sometimes there is also a sign word: by the year 2000.