What are the markers of the present perfect, past tense, and simple present tense in English?

The marker of the present perfect tense is already or has already passed, indicating that the action has continued from a certain time in the past until now. For example: - She had already walked for an hour. - He had learned a foreign language before. The marker of the past perfect tense is used to indicate that the action has been completed before a certain time in the past. For example: He had been learning a foreign language for a year. - She had been walking for an hour and five minutes. It should be noted that the past perfect tense is usually used to indicate actions that have been completed before a certain time in the past, while the present perfect tense is used to indicate actions that are currently being done.

Symbol words: am is is was has been have been will be will have had was had been are were had been are Simple present tense: - The Present Continuous Tense:am/is/are doing - Present Perfect Tense:has/has been doing Future tense: - Future Continuous Tense:will/will have been doing - Future Perfect Tense:will have/had been done Simple Past Tense: - Past Continuous Tense:was/was doing - Past Perfect Tense:has/has been doing The difference between the simple present tense and the simple future tense: - The simple present tense is used to describe actions or states that are currently happening. The simple future tense is used to describe actions or states that may happen in the future. - The simple past tense is used to describe an action or state that has happened in the past. The difference between the simple present tense and the simple future tense is similar to the past tense. - The present continuous tense and the present perfect tense are both used to describe an ongoing action or state, but the former is usually used for an action that has not happened in the past while the latter is used for an action that has been completed before a certain point in the past. Simple Future Perfect Tense: will have been done - It means that actions that have been completed before a certain point in time in the future will continue to happen but have nothing to do with the present.

Marks are words used to express the relationship between time, such as past, present, future, etc. The present perfect tense means that the action started at a certain point in the past and continues until now. The emphasis is on the duration of the action. The simple past tense meant that the action was completed before a certain point in the past, emphasizing the start time of the action. In novels, it was often necessary to use the present perfect tense and the simple past tense to describe the actions and states of the characters. For example, if a character started doing something at a certain point in time and continued until now, it could be expressed in the present perfect tense, while if a character completed something before a certain point in time in the past, it could be expressed in the simple past tense. For example: - He had been busy the whole day until ten o'clock in the evening. - He had once learned a new skill but had never had the time to practice it. - Last night, she dreamed that she had gone back in time and changed everything. In these examples, the markers "always","until","once","but", etc. are used to emphasize the duration and sequence of actions.

The present perfect tense is marked with have/has, and the past tense is marked with had. For example: - I have finished my homework - She had gone to the store before she came back home Note that the present perfect tense and the simple past tense are different in grammar. The present perfect tense focuses on actions that have been completed before a certain point in the past while the simple past tense focuses on actions that have taken place before a certain point in the past.

The Present Perfect Tense is a tense that indicates that an action begins in the past and continues to the present or that it begins at a certain time in the past and continues to the present. It is usually formed by "has/has+ past tense" or "Have/has+ past tense". The present perfect tense emphasized the continuity of the action, which meant "always","always","at any time","from a certain time in the past until now", etc. Some of the more common markers of the present perfect tense include: - has/has been working since; - have/has always been; - have/has been in love with; - have/has always wanted; - have/has been to; - has/has been able to. The above are some common signs of the present perfect tense that can be used according to the specific context.

The present perfect tense is a tense that indicates that an action has been completed before a certain point in the past. It is usually formed by the auxiliary verb has or have plus a past tense. The present perfect tense is usually used to describe actions that have been completed before a certain point in time. Some of the more common markers of the present perfect tense include: - Have/has been studying: indicates that the action occurred at a certain point in the past and continues until now. - been to the movies: It means that the action took place at a certain point in the past, but it may not have lasted until now. - Have/has knowledge: indicates that the action occurred at a certain point in the past and continues until now. - 'been training': This means that the action happened at a certain point in the past, but it might not last until now. It should be noted that there are some exceptions to the current perfect tense, such as: - Have/has been working: indicates that the action occurred at a certain point in the past but may not have lasted until now. - Being in love: It means that the action happened at a certain point in the past but may not last until now. I hope these signs will help you use the present perfect better!

The Present Perfect Tense is a tense that indicates that an action has happened in the past and has an effect on the present. Its symbolic words were "already" or "completed." For example: - He had already gone to school. - She had finished her studies. - We've already spent a week on vacation. In these cases, the actions happened in the past, but they had an effect on the present.

In English, the Present Perfect Tense was used to indicate that an action had taken place in the past and continued to the present. It usually required auxiliary verb such as "has/has been" or "has/has been happening" and the present perfect tense. The following are some commonly used signs of the present perfect tense: 1 has/has been: It means that a continuous action has been going on since a certain time in the past. For example: - She has been studying English for five years - The movie has been popular for a year now 2 has/has been happening: indicates that a continuous action is in progress and has been going on for some time. For example: - The project has been ongoing for months now - She has been feeling tired all day 3 have/has+ past tense: It means that an action that has already happened began at a certain time in the past and continues until now. For example: - I have been to Paris twice - He has been a teacher for five years 4 been+ adjective/adverb: It means a state that lasts for a long time. For example: - The weather has been cold this winter - She has been feeling ill for a week

The present perfect tense and the present perfect continuous tense are two signs that indicate that the action was completed in the past. The present perfect tense means that an action started at a certain point in the past and has continued until now. It is an action that was completed before a certain point in the past. For example: - He had already fallen asleep. - She bought a house last week. - We studied the whole day at school. The present perfect continuous tense indicated that an action began at a certain point in the past and continued during this period of time. For example: - He went on a trip last weekend. - She had been practicing the piano. - They were to meet at four o'clock in the afternoon. It should be noted that the present perfect tense and the present perfect continuous tense only indicate the way the action is completed, not the time it takes to complete the action.

The present perfect tense and the present perfect continuous tense are two tenses used to indicate that an action has been completed in the past. The specific differences between their logo words were as follows: The present perfect tense: - has+ past tense: indicates that the action started at a certain time in the past and has been completed since then. For example:I have learned the language for several years. - have+ past tense (if there is): indicates that the action started at a certain time in the past and continues until now. For example:I have been to Paris. Now complete the continuous tense: - Have/has+ past + present: The action started at a certain time in the past and continued until now. For example:I have been studying English for several months. - Have/has+ past tense (at the same time)+ been+ present tense: It means that the action started at a certain time in the past and has continued since then. For example:I have been to Paris and have seen the Paris Tower. For example, here are some examples of using the present perfect tense: - She has been studying English for five years - He has learned to drive a car since he was young - We have been to Europe twice - They are still working on the project. An example of using the present perfect: - She has been studying English for six months now - He has been working in the company for ten years. - We have been to Paris and had a great time - They are still in the process of moving