Shanghai is one of the largest cities in China and the commercial and financial center of China. Huangpu River runs through the city. There are many new buildings and mansions in Pudong area, including the famous Pearl of the Orient. There are many good shops on Nanjing Road, which is the main commercial road in this city. Every day, many tourists and businessmen come here to enjoy Shanghai's food, attractions and life. I can tell you all English tenses and examples. Tenses in English grammar are verb forms, and different tenses are used to express different times and ways. Verb tense is a verb form that expresses behavior, action and state under various time conditions. So when we say tense structure, we mean the verb form corresponding to tense. The so-called "time" is the time when the behavior occurs or the state exists, that is, "now, past, future, past and future"; The so-called "state" is the state of a behavior or state when it occurs. There are four states: general state, progressive state, completed state and completed progressive state. By combining tenses, the following sixteen tenses are formed: tense, present tense, past tense, future tense, past tense, future tense, general tense and general present tense.
Simple past tense
the simple future tense
past future tense
present continuous tense
Past continuous tense or past continuous tense
Future continuous tense
In the past, in the future
Perfect tense, present perfect tense
past perfect tense
Future perfect tense
the past future perfect tense
The perfect continuous tense is now the perfect continuous tense.
Past perfect continuous tense
Future perfect continuous tense
The past and future perfect continuous tense is simple present tense 1. Concept: refers to what happens frequently, what happens regularly, what happens frequently and the truth. 2. Adverbials of time: always, naturally, often, at certain times, every week (day, year, month …), once a week (day, year, month …), Sunday (Monday …).3. Basic structure: subject +do/does+ others. If the subject is singular in the third person, the verb should be singular in the third person. 4. negative form: subject +am/is/are+not+other (if the predicate verb in this state is an action verb, add don t； before it; If the subject in the third person is singular, use not. 5. General interrogative sentence: put the be verb at the beginning of the sentence; Ask questions with the auxiliary verb do. If the subject of the third person is singular, use does. Restore action verbs at the same time. Example: (1) It seldom snows here. He is always ready to help others. He is always ready to help others. (3) Actions speak louder than words. Facts speak plainer than words. Simple past tense 1. Concept: the action or state that occurred at some time in the past; Habitual and regular actions and behaviors in the past. 2. adverbial of time: before, yesterday, the day before yesterday, last week, finally (year, night, month ...), at 1989, just, 5 years old, one day, a long time ago, once upon a time, etc. 3. Basic structure: subject+verb past tense or be+ noun past tense. 4. Negative form: subject +was/were+not+ others (add not before the action verb and restore the action verb at the same time). 5. General interrogative sentence: was or are put at the beginning of the sentence; Ask questions with the past tense did of the auxiliary verb do and restore the action verb at the same time. 6. Example: (1) She often helps us these days. I didn't know you were so busy. I didn't know you were so busy. General future tense 1. Concept: an action, plan, scheme or preparation to do something that will happen. 2. Signs: tomorrow, soon, a few minutes later, the day after tomorrow, etc. 3. Basic structure: (1) subject +am/is/are+going to+do sth(2) subject +will/shall+do+do sth4. Negative sentence: add not5 after the copula verb is/am/are or the modal verb will/shall. Will/shall mentioned the beginning of the sentence. They will compete with us in study. They will compete with us for study. It will rain. It will rain. General past future tense 1. Concept: based on a moment in the past, looking at the future from the past, often used in object clauses. 2. adverbial of time: the next day (morning, year …), the next month (week …), etc. 3. Basic structure: subject+was/were+going to+do+others; Subject+will/should+do+other 4. Negative form: subject+was/were+not+going to+do; Subject +would/should+not+do.5 General question: was or are at the beginning of the sentence; Will/should mention the beginning of the sentence. 6. Example: (1) He said he would go to Beijing the next day. He said that he would go to Beijing the next day. I asked who was going there. I asked, who is going there? The present continuous tense 1. Concept: indicates the actions and behaviors that are going on at the present stage or when speaking. 2. Adverbial of time: now, now, heaven, etc. Look and listen to 3. Basic structure: subject +be+ do+other 4. Negative form: subject +be+ not+do+other 5. General problem: put the be verb at the beginning of the sentence. 6. Example: How do you feel today? How do you feel today? He is good at his lessons. He did well in class. Past continuous tense 1. Concept: indicates the behavior or action that is happening or going on at a certain time or moment in the past. 2. Adverbial of time: yesterday at this time, at that time or when the leading predicate verb is an adverbial of time in the general past tense. 3. Basic structure subject +was/were+doing+ other 4. Negative form: subject +was/were+not+do+others 5. General question: put was or were at the beginning of the sentence. At that time, she worked in a certain department of the People's Liberation Army. At that time, she worked in the People's Liberation Army. I was reading a newspaper when he came in. I was reading a newspaper when he came in. Future continuous tense 1. Concept: an action that is in progress at a future time, or an action that starts and continues at a future time. Often used to express inquiries, requests, etc. 2. adverbial of time: soon, tomorrow, this evening, Sunday, at this time, two days later, tomorrow night. Basic structure: subject +shall/will+be+ present participle+other 4. Negative form: subject +shall/will+not+be+ present participle+other 5. At this time the next day, they will be sitting in the cinema. At this time the next day, they were sitting in the cinema. He won't go to the party. Past and future continuous tense 1. Concept: indicates an action that is going on in the past or in the future. It is mainly used in object clauses, especially in indirect speech. Basic structure: should/would+be+ present participle 3. He said he couldn't come because he had a meeting. He said he couldn't come because he had a meeting. They said they would come. They said they would come. The present perfect tense 1. Concept: the influence or result of an action that happened or has been completed in the past on the present, or the action or state that started from the past and continues to the present. 2. adverbial of time: not yet, ready, just now, never, once, so far, so far, since+time point, for+time period, recently, recently, the past few years, etc. 3. Basic structure: subject +have/has+p.p (past participle)+others 4. Negative form: subject+have. General question: there is or is not at the beginning of the sentence. Great changes have taken place in this country in the past few years. I wrote an article. I wrote a paper. Past perfect tense 1. Concept: the action or behavior that occurred before this time or the behavior that was completed before an action in the past, that is, the "past past". 2. adverbial of time: before, until the end of last year ($ TERM, month ...), etc. 3. Basic structure: subject +had+p.p (past participle)+others 4. Negative form: subject +had+not +p.p (past participle) +others 5. General question: put it away. As soon as we got to the station, the train had already left. When we arrived at the station, the train had already left. By the end of last month, we had reviewed four books. By the end of last month, we had reviewed four books. Basic structure: subject +Had+p.p (past participle)+other ① affirmative sentences: subject +had+p.p (past participle)+other ② negative sentences: subject +had+not+p.p (past participle)+other ③ general interrogative sentences: Had+ subject +p.p (past participle). 2. Adverbial of time: It's time to …; To+end of time phrase (future); By time+ clause (future) 3. Basic structure: subject +be going/will/shall+have+p. p (past participle)+other 4 cases: Great changes have taken place in this area by the time you come back. Great changes will take place when you come back. Past and future perfect tense 1. Concept: indicates actions that will happen before a certain time in the past and a certain time in the future. Often used in subjunctive mood, it means contrary to past facts. 2. basic structure: should/would have done sth. Example: I think you have left by this time. I think you have left now. He insisted that they should finish it before 8 o'clock. He told them that he would finish it before 8 o'clock. The present perfect continuous tense 1. Concept: indicates the action that started from a certain time in the past and continues to the present. This action may have just begun, it may continue, and it may continue into the future. 2. Basic structure: subject+you/once+once+do+other 3. Adverbial of time: from+time point, for+ time period, etc. I have been sitting here for an hour. I have been sitting here for an hour. The children have been watching TV since six o'clock. The children have been watching TV since six o'clock. Past perfect continuous tense 1. Concept: it means that an ongoing action or state has been going on until a certain time in the past, but it has not been completed and will not end now. 2. Basic structure: subject+have+bee+doing+others 3. When she took the exam, she choked with a bad cold. She had been suffering from a bad cold before the exam. Have they been expecting this news for some time? Have they been expecting this news for some time? 4. Special meaning: ① Unfinished: He has been writing this novel. He is already writing a novel. He didn't finish it. He has been studying the significance of this proof. He once learned this proverb. He has studied hard. We have been studying what the enemy said. We have always kept what the enemy said. (But we don't understand) 4 Recent situation: He has been complaining to his wife. He had a quarrel with his wife. He keeps asking me the same question. He keeps asking me the same question. (Repeat) 6 Emotion: What has he been doing? What did he do? Future perfect continuous tense 1. Concept: refers to the action lasting from a certain moment to a certain moment in the future. Whether to continue depends on the context. Basic structure: will/will always do 3. By the end of this year, I will have worked in this factory for 20 years. By the end of this year, I will have worked in this factory for 20 years. If we don't worry, the shop will be closed before we get there. If we don't hurry, the shop will be closed when we get there. Past and future perfect continuous tense 1. Concept: indicates the behavior that will happen from the past to the future. Basic structure: should/would+have+bee+present participle 3. He convinced me that he would have lived there for 30 years by the end of the year. He told me that he would have lived there for thirty years by the end of the year.