What is the difference between the perfect tense and the past tense? The difference between the pres

Perfect tense refers to an action that has been happening from a point in time in the past until now.

Past tense refers to an action that took place at a point in time in the past.

The main difference between the present perfect tense and the simple past tense is that the present perfect tense emphasizes "the influence of what has been done in the past on the present, emphasizing the present", whereas the simple past tense talks about "what has been done in the past, emphasizing the past".

The answers are represented. It can be used in conjunction with the time adverbial that indicates the time period in which it has occurred to the present and emphasizes the impact on the present, and cannot indicate the specific past time when the action occurred, and that an action has occurred from the past to the present, and is likely to continue, and can be used in conjunction with the time adverbial that indicates the time period to express the action or situation that existed in the past time. In some cases, the time of occurrence is not clearly indicated, but it is actually in the past, and the past tense is applied; Also, when talking about the deceased, the past tense is also often used.

1. Usage of the present perfect tense (1) The present perfect tense cannot be used alone with the exact time. The present perfect tense is often used in conjunction with an adverbial past time that indicates an uncertain past. The present perfect tense is often used in conjunction with a temporal adverbial that indicates frequency.

The present perfect tense can also often be used in conjunction with temporal adverbials, including the present time. (2) The present perfect tense can also be used to indicate the action of rebirth in the past time to the present time. Present perfect tense"Unfinished usage"It refers to the action that began at some point in the past and continues to the present, or may continue.

2. Usage of the past tense (1) The simple past tense denotes an action or state of existence that occurred at a certain time in the past, and can also denote an action that was often or reversely generated in the past. It is often used in conjunction with an adverbial to indicate the past. (2) Indicates the characteristics and state of things or people.

Indicates regular, habitual movements. Represents objective reality.

1.Simple past tense denotes something that happened at a time in the past, a state of being, or an action that happens frequently. The focus of the speech is only to state a past event, and the impact on the "present" is not emphasized. Such as:

he visited guilin in 1998.He visited Guilin in 1998. (Only the time to Guilin is stated).

2.The present perfect tense indicates that the kinetic and chain agitation took place in the past and had an impact or produced a result in the present. It is not used in conjunction with the adverbial of the past time that is absolutely determined. Such as:

jill has bought a new computer.Jill buys a new computer. (The point is that now I have a new computer).

3.Distinction between two tenses.

The simple past tense is usually used in conjunction with the adverbial phrase that indicates the past. Such as: yesterday, last week, two years ago, just now, in 2002, etc.; The present perfect tense is often associated with adverbs such as just, already, ever, never, and these days, this week, since....

for...Indicates a period of adverbial conjunction.

The difference between the past tense and the present perfect tense is resistantThere are some differences between the past tense and the present perfect tense. Simple Past Tense: Usually denotes something that happened at a time in the past, a state that existed in it, or an action that happened frequently.

Present Perfect Tense: Indicates that an action or state in the past has continued until now and has been completed, as well as its impact on the present, and is likely to continue to occur.

Differences:

1. The general past tense is used in conjunction with specific adverbials that indicate past time, such as: yesterday; Emphasize that the action happened in the past and has nothing to do with the present. For example:

he saw the film last night.(In the past tense, he said that he watched the movie last night, and now he doesn't know if he wants to watch it again.) )

2. The present perfect tense is used in conjunction with one's own characteristic words, emphasizing the impact of actions that occurred in the past on the present or the actions that began to occur in the past and continue to the present. he has (ever) seen the film before.(Now finished, indicating that he has seen the movie and does not want to watch it anymore.)