初中英语现在完成时课件.pptx

Middle School English Present Perfect Tense Coursecontents目录The definition and structure of the present perfect tenseThe basic usage of the present perfect tenseSpecial usage of present perfect tensecontents目录Comparison between presentation perfect tense and simple past tenseAnalysis of Common Errors in the Present Perfect TensePractice and consolidation of the present perfect tenseCHAPTER01The definition and structure of the present perfect tenseClear and clearFirstly,we need to clarify what the present perfect tense is.Simply put,it describes an action or state that starts from the past,continues until the present,and may continue.It emphasizes the impact of this action or state on the present.DefinitionComplete and accurateThe structure of the present perfect tense is have/has+past participle.For example,the sentence I have studied English for three years means I have studied English for three years.Among them,have studied is the structure of the present perfect tense.StructureCHAPTER02The basic usage of the present perfect tenseThe present perfect tense is used to describe an action or state that was in the past and continues to the present moment It emphasizes the duration of the action or state and its relevance to the present situationExample:I have studied English for three years.This presence indicates that the study of English Began in the past and continues up to the present momentIndicators an action or state that has been onging from the past to the presentThe present perfect tense can be used to describe how past actions have resulted in current situations or effects It highlights the connection between the past and the presentExample:Because I have studied English for years,I can now communicate effectively with native speakers.This presence indicates that the past action of studying English has led to the ability to communicate effectively in the presentationIndications of the impact of past actions on the presentationThe present perfect tense can be used to express how past actions or states are related to or influence the present moment It emphasizes the relevance of the past to the present situationExample:I have realized that learning English is important for my future career.This presence indicates that a past realization about the importance of English is relevant to the present career considerationsExpressing the correlation between past actions or states and the presentationCHAPTER03Special usage of present perfect tenseSummary:The presentation perfect tense can be used with time advertisements that express duration,such as for It indicates an action that started in the past and continued into the presentationDetail:When the present perfect tense is used with for and a duration,it creates a sense of connection between the past and the present It emphasizes that the action is still relevant or onging For example,I have studied English for three years implies that the study of English Began in the past and continues to the presentUsed in connection with time adapters guided by forUsed in connection with the time adaptive introduced by sinceSummary:The present perfect tense can be used with the time advisory since to express an action that was in the past and continues up to the present momentDetail:When combined with since,the present perfect tense creates a sense of duration and establishes a connection between two points in time It implies that the action started at some point in the past and continues up to the present moment For example,I have lived in this city since I was born suggests that the person has been living in this city from birth and continues to live there nowSummary The presentation perfect tense can be used with consecutive advertisements,such as already,just,and yet,to express different means depending on the contextDetails These advertisements modify the meaning of the present perfect tense by adding numbers like surprise,contrast,or emphasis For example,I have already finished my home suggests that the action of finishing the home was completed prior to some other event or action,potentially sacrificing the listener In contrast,I havent yet finished my home emphasizes that the action is still pending or pendingUsed with advertisements such as already,just,yet,etcCHAPTER04Comparison between presentation perfect tense and simple past tenseVS Describes an action or state that Began in the past and continues to the present It emphasizes the connection between the past and the presentSimple Past Tense Focuses on an action or state that occurred in the past and has no connection to the presentation It emphasizes the isolation of the event in timePresent Perfect TenseDifferences in the persistence of actions or statesPresent Perfect Tense Indications that the action or state has relevance to the presentation,either directly or indirectly It can suggest a change or development as a result of the past actionSimple Past Tense Does not necessarily have any impact on the presentation,focusing solely on what happened in the pastThe difference in the impact of actions or states on the presentationThe difference between time adaptersUse time advertisements such as already,yet,just,etc.,to describe the time relationship between the past and the presentPresent Perfect TenseUse time advertisements like yesterday,last week,in 2020,etc.,to specify the exact time when the action occursSimple Past TenseCHAPTER05Analysis of Common Errors in the Present Perfect Tense When students use the present perfect tense,they often confuse it with the general past tense.Summary The present perfect tense indicates that an action has been completed and has an impact on the present,while the general past tense indicates that an action occurred in the past.Students may overlook the impact of actions on the present and mistakenly use the simple past tense when using it.Detailed descriptionConfused with the simple past tenseSummary:Students tend to confuse the present perfect tense with the general present tense when describing past actions that started and continued until the present.Detailed description:The present perfect tense is used to describe an action or state that started in the past and continued until the present,emphasizing its impact on the present;And the present tense is used to describe frequently occurring actions or states.Students may overlook the continuity of actions or states and mistakenly use the present tense when using it.Confused with the simple present tense When describing past actions,students tend to confuse the present perfect tense with the past continuous tense.Summary The present perfect tense indicates that an action has been completed and has an impact on the present;The past continuous tense represents an action that was taking place at a certain moment in the past.Students may overlook the completeness of actions and mistakenly use the past continuous tense when using it.Detailed descriptionConfused with the past continuous tenseCHAPTER06Practice and consolidation of the present perfect tense Multiple choice exercises are a great way to assess students understanding of the present perfect tense These exercises present a presence with a missing word or phrase,and students must choose the correct completion from a list of options I have _ the book.A.read B.am reading C.will read D.readsSummaryExampleMultiple choice exercisesSummary Fill in the blank exercises require students to complete a presence by filling in the appropriate form of the present perfect tense This helps to improve their grammar skills and deepen their understanding of grammar.要点一要点二Example I have _(finish)my home already ready.Fill in the blank exercisesSummary Translation exercises are a valuable tool for practicing the presentation perfect tense Students are giving a presence or paragraph in English and asked to translate it into Chinese,focusing on maintaining the correct tense usageExample I have seen that movie before.Translation exercisesTHANKSFOR感谢您的观看WATCHING