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1、Middle School English Grammar Review-Present Per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The difference between present perfect tense and simple past tensePractice and consolidation of the p
2、resent perfect tenseCONTENTS01The definition and structure of the present perfect tenseCHAPTERThe present perfect tense is a grammatical structure that combines the past simple tense with the present participle to express an action that has been completed at some point in the past and its relevance
3、to the present moment.This tense is used to communicate actions or situations that began in the past,continued up to the present,and may or may not continue into the future.It emphasizes the connection between the past and the present,often focusing on the result or impact of the past action on the
4、present state of affairs.definitionThe structure of the present perfect tense consists of have/has followed by the past participle of the verb.The auxiliary have/has is combined with the past participle of the verb,which is formed by adding-ed to the basic form of the verb(e.g.,write becomes written
5、).The subject and auxiliary are then combined to create the complete present perfect tense structure,such as She has written a letter or They have finished their homework.structure02The basic usage of the present perfect tenseCHAPTERThe present perfect tense is used to show how past actions have aff
6、ected the present situation.For example,I have studied English for 3 years,so I have a good grasp of the language.It can also be used to express an action that started in the past and continues into the present,such as She has been living in New York for the past 5 years.The impact of past actions o
7、n the presentThe present perfect tense is used to describe actions that started in the past but are still ongoing in the present.For instance,He has been working as a teacher for 10 years.It can also be used to express an action that has been repeated on multiple occasions up until now,such as We ha
8、ve met every year since we were in college.The actions that occurred in the past have continued until nowThe present perfect tense is used to describe actions that have been completed up until now but are not necessarily still ongoing.For example,I have finished my homework and have cleaned my room.
9、It can also be used to express an action that has occurred up until a specific point in time in the past,such as She has known him since she was a child.Actions completed so far03Special usage of present perfect tenseCHAPTER表示某个动作在一段时间内已经完成。当使用时间副词for引导时，通常表示某个动作在一段时间内已经完成，例如I have studied English f
10、or three years.表示我已经学了三年英语。Used in conjunction with time adverbs guided by for详细描述总结词Used in conjunction with the time adverbial introduced by since总结词表示某个动作从某个时间点开始一直持续到现在。详细描述使用时间副词since引导时，通常表示某个动作从某个时间点开始一直持续到现在，例如I have lived in this city since I was born.表示我从出生就一直住在这个城市。表示某个动作已经发生或即将发生。总结词与alr
11、eady、just、yet等副词一起使用时，通常表示某个动作已经发生或即将发生，例如I have already finished my homework.表示我已经完成了作业。详细描述Used with adverbs such as already,just,yet,etc04The difference between present perfect tense and simple past tenseCHAPTERTime adverbs in the present perfect tense often express a time that is recent in relat
12、ion to the present moment,such as recently,lately,today,this week,etc.On the other hand,time adverbs in the simple past tense are more likely to express a time that is in the past,such as yesterday,last week,three days ago,etc.The present perfect tense can also express an action that has been comple
13、ted at any point up until the present moment,using time adverbs like ever,yet,already,etc.This is not possible with the simple past tense.The difference between time adverbsThe difference in whether an action is completed or notThe present perfect tense emphasizes the completion of an action up unti
14、l the present moment,regardless of when that action began.For example,I have studied English for three years means that the action of studying English began in the past but is still ongoing.In contrast,the simple past tense focuses on the action itself and whether it was completed during a specific
15、time in the past.For example,I studied English for three years means that the action of studying English was completed during a specific period in the past.The present perfect tense is often used to express an action or event that is relevant to the present moment or has relevance to the present mom
16、ent because it has been completed recently.For example,I have seen that movie already implies that the action of seeing the movie is relevant to the present moment because it was completed recently.On the other hand,the simple past tense is used to express an action or event that occurred in the pas
17、t and is no longer relevant to the present moment.For example,I saw that movie last week means that the action of seeing the movie occurred in the past and is no longer relevant to the present moment.Differences in emphasis points05Practice and consolidation of the present perfect tenseCHAPTERExerci
18、se 1 Provide four multiple choice questions that test students understanding of the present perfect tense.Exercise 2 Design another four multiple choice questions that focus on the usage of the present perfect tense in different contexts.Exercise 3 Create a set of eight multiple choice questions,hal
19、f of which are about the formation of the present perfect tense and the other half are about its usage in sentences.Multiple choice exercisesExercise 101 Provide a series of sentences with missing present perfect tense verbs.Ask students to fill in the blanks with the correct form of the verb.Exerci
20、se 202 Create a paragraph with missing present perfect tense sentences.Ask students to complete the paragraph by filling in the blanks with the appropriate verbs.Exercise 303 Provide a passage with missing present perfect tense forms in various contexts.Encourage students to use their knowledge of t
21、he tense to fill in the blanks accurately.Fill in the blank exercises010203Exercise 1 Provide a set of five English sentences with the present perfect tense.Ask students to translate these sentences into Chinese,emphasizing the correct usage of the tense.Exercise 2 Provide a set of Chinese sentences
22、 with the present perfect tense.Ask students to translate these sentences back into English,making sure to use the appropriate English verb forms.Exercise 3 Create a passage in English containing the present perfect tense.Ask students to translate this passage into Chinese,paying attention to the correct translation of the tense forms.Translation exercises 感谢观看 THANKS