Answer; English tense *** 16.
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English grammar: the tense of verbs
English * * * has 16 tense. According to the analysis of CET-4 and CET-6 papers exposed in recent years, the main points of tense test are: perfect tense-present perfect tense, past perfect tense and future perfect tense; Progressive tense-present continuous tense, past continuous tense, future continuous tense and perfect continuous tense; General tense.
I. General tense
1, simple present tense
(1) The simple present tense indicates a continuous action or state without time limit or an action or state that appears repeatedly at this stage. Often used with adverbs, such as usually, often, always sometimes, regularly, recently, occasionally, annually, weekly, etc. For example:
The moon goes around the earth ..
Mr Smith goes to work by bus every day.
(2) It is composed of after, until, before, once, when, even if, in case, once, the moment and if, never, etc. under the guidance of time adverbial clauses or conditional adverbial clauses. The simple future tense is usually replaced by the simple present tense. For example:
I will tell him the news as soon as I see him.
If it rains tomorrow, I won't go to the country.
(3) Some verbs indicating the beginning can use the simple present tense to indicate the action to be taken according to the regulations, plans or arrangements. Such verbs include: yes, go, come, start, department, arrive, start, leave, etc. For example:
The plane takes off at three o'clock sharp.
The new teacher will arrive tomorrow.
(4) In clauses guided by why, what, where, who, who, that, as, etc. The present tense is often used instead of the future tense. For example:
1) Whoever arrives first will get a free ticket.
2) You may take the same train with me tomorrow.
2. Simple past tense
(1) indicates a completed action or state that occurred at a specific time in the past, and is often used with words, phrases or clauses that indicate the exact past time. For example:
We went to the cinema to see a very interesting film last night.
(2) said the past habitual action. For example:
He is always the last to go to class.
I used to do my homework in the library.
Pay attention to the difference between being used to doing this phrase.
3. General future tense
1) indicates a planned or expected action or state in the future. For example:
I will graduate next year.
2) Several alternative forms:
1)be going to +v is widely used in spoken language to indicate what you are going to do or what will happen. For example:
When we have saved enough money, I am going to buy a house.
2)be to +v means what you plan to do, which has the mandatory meaning of "must". For example:
I am going to play tennis this afternoon.
3) Coming soon +v indicates something that will happen soon. For example:
He was about to start.
4)be due to +v means what has been determined in advance and what must happen. For example:
The train is scheduled to leave in ten minutes.
Be on the brink of-ing emphasizes that something is about to happen. For example:
The baby was about to cry when her mother finally came home.
Second, the progressive tense
1. Present continuous tense
(1) indicates an ongoing action, and is often used with now, right now, at the mother, for the time, for the present, etc. For example:
Don't disturb her. She is reading a newspaper now.
(2) indicates the actions that often occur at this stage, and is often used with always, continually, forever, constantly, etc. For example:
My father always criticizes me.
(3) indicates what will be done in the near future according to the plan or arrangement. Verbs with this grammatical function are limited to transitional verbs. In other words, the verb means to move from one state or position to another. Commonly used are: go, come, go, start, arrive, return, etc. For example:
They are going to Hong Kong next month.
(4) Some verbs can't be used in the continuous tense, and they are a kind of verbs that express "feeling, affection, existence, subordination" and so on. Such as: see, hear, smell, taste, feel, notice, look, appear, (words expressing feelings); Hate, love, fear, like, want, hope, favor, refuse, give (verbs expressing feelings); Be, exist, remain, stay, objective (verbs indicating the state of being); Possession, possession, possession, inclusion, belonging to, consisting of, forming (verbs indicating possession and subordination); Understand, know, believe, think, doubt, forget, remember (a verb indicating thinking and understanding). But if their meaning changes, they can also be used in the continuous tense. For example:
Tom looks pale. What happened to him?
(look is a relative verb here, meaning "appear, look")
Tom is looking for his book.
(look is a notional verb here, meaning "looking for")
2. Past continuous tense
The past continuous tense means that when a past action happens or after it happens, another past action is going on, or it means repeating past habits. It is often used with verbs, such as always, continually and constantly. For example:
We were discussing it when the headmaster came in.
Whenever I visit him, he is always writing at his desk.
3. Future continuous tense
The future continuous tense mainly refers to the action that is going on at some time in the future, or the action that starts and continues at some time in the future. Often used to express polite inquiries, requests, etc. For example:
At this time the next day, they will be sitting in the cinema.
What will you be doing at six tomorrow evening?
4. When it is finished
The perfect continuous tense (present, past and future) is an emphasis form of the perfect tense (present, past and future) and will be described by the perfect tense.
Third, the perfect tense
When completed, it usually means that an action has been completed or is in progress. It can be divided into:
1.
(1) The present perfect tense is used to indicate that the action just completed (often used with yet, ready, just) still affects the current situation, or the situation that happened at a certain moment in the past and continues to the present (often used with for and since). For example:
1) I just finished my homework.
Mary has been ill for three days.
(2) The adverbials of time often used with the present perfect tense are: since, for, during, over and other phrases; Adverbs have, however, just now, once, now, before, often, recently, etc. Adverbial phrases this week (morning, month, year), so far, so far, many times, so far, etc. For example:
1) Haven't been there for five years.
So far, she hasn't enjoyed her summer vacation.
3) There have been many changes since 1978.
(3) The perfect tense can be used in the following structures:
This (that, it) is (was) the first (second …) time+attributive clause; This (that, it) is the only (last)+n+ attributive clause of (was); This (That, It) is (was)+ superlative adjective +n+ attributive clause. If the predicate verb of the main clause is the simple present tense, the predicate verb of the clause usually uses the present perfect tense; If the main clause predicate verb is the simple past tense, the clause predicate verb usually uses the past perfect tense. For example:
(1) This is one of the rarest questions raised at such a meeting.
Someone knocked at the door. This is the second time someone interrupted me that night.
2. Past perfect tense
(1) indicates an action or situation that happened before a certain time in the past, which can be expressed by prepositional phrases such as by and before or adverbial clauses of time; Or an action has been completed before another past action. For example:
We had just had breakfast when Tom came in.
By the end of last year, they had produced 5000 bicycles.
(2) Verbs expect, hope, mean, intention, plan, support, wish, want, etc. Use the past perfect tense to indicate that the past hopes, expectations, intentions or wishes have not been realized. For example:
I had planned to have a good holiday this year, but I couldn't leave.
The other two ways to express "things I wanted to do but didn't do in the past" are:
1)was/was+ did something, for example:
We should have come yesterday, but we couldn't.
Intend to do something, such as:
I meant to tell you about it, but I forgot.
(3) The past perfect tense is often used in the following fixed sentence patterns:
1) Hardly, Scarely, reluctantly+past perfect +when+ past tense. For example:
Hardly had I got on the bus when the bus started.
2) Not earlier than+past perfect+than+past tense. For example:
Hardly had I gone out when he came to see me.
3) by (the end of of)+past time, and the predicate verb in the main sentence is the past perfect tense. For example:
By 4 o'clock yesterday afternoon, the experiment had been completed.
3. Future perfect tense
The future perfect tense indicates an action that will be completed at some time in the future, or an action that has been completed before another future action occurs; It can also be used to express speculation. Adverbials of time often used with future perfect tense are: by(the time/the end of)+ phrases and sentences indicating future time; Words or sentences indicating future time; When, after, etc. Add a sentence indicating future action. For example:
By this time tomorrow, you will have arrived in Shanghai.
I will finish this composition before nine o'clock.
When we arrived at the railway station, the train might have left.
4. When it is finished
The perfect continuous tense is the emphasis form of the perfect tense, including the present perfect continuous tense, the past perfect continuous tense and the future perfect continuous tense.
(1) The present perfect continuous tense indicates that an action or state that started before a certain time in the past continued until a certain time in the past. For example:
I have been looking for my lost book for three days, but I still can't find it.
(2) The past perfect continuous tense indicates that the action or state that started before a certain moment in the past has continued to a certain moment in the past. For example:
It has been raining cats and dogs for more than a week, and it has caused landslides in many places.
(3) The future perfect continuous tense means that the action or state that started before a certain time in the future will last until a certain time in the future. For example:
When you arrive tonight, she will have been typing for hours.
Four: temporal consistency
Temporal consistency is an important part of CET-4 and CET-6. Usually, the tense of the main clause predicate determines the tense of the clause predicate. The general principle is:
1. When the main clause predicate uses the present tense or the future, the clause predicate uses any tense according to the specific situation.
He said that he lived in Wuhan.
We hope many people will attend your party today.
"Did you hear that Bill finally sold the house?" "Yes, but I don't know who bought it."
"The street is very lively."
"Of course. Do you think the astronauts have come back? "
2. When the predicate of the main clause uses the past tense, the predicate of the clause must use the past tense.
He said that he was writing a novel.
The teacher wants to know when we will finish the experiment.
He said that his father was an engineer.
3. When the clause is true without the concept of time, the predicate of the clause should be the simple present tense. For example:
The teacher told them that lightning seems to be ahead of thunder because the speed of light is faster than the speed of sound.
Note: In this case, even if the main clause predicate uses various tenses of the past tense, the clause predicate also uses the simple present tense.
4. When the predicate of a clause can only use subjunctive mood.
When using the principle of time consistency to determine the tense of clause verbs, we should also pay attention to the fact that if the subject verb is a verb indicating command, request, demand, hint, suggestion, etc. The predicate of a clause can only be subjunctive and cannot follow the principle of time consistency. For example:
We insist that we do it ourselves.
Voice of verbs
Voice is also a form of verbs. There are two voices in English: active voice and passive voice. The active voice indicates that the subject is the executor of the action, and the passive voice indicates that the subject is the receiver of the action.
We use electricity to run the machine. (active voice)
Electricity is used to run machines. (passive voice)
1. cannot be used for verbs and phrases in the passive voice.
(1) In English, intransitive verbs cannot be used in the passive voice, but some intransitive verbs (including phrases) are easily misused. Such as: appearance, belonging, belonging, death, escape, falling, happiness, persistence, maintenance, success, occurrence, arrival, occurrence and composition.
(2) Some transitive verbs, such as becoming, containing, spending, fitting, being, assembling and fitting, have no passive voice.
2. The tense form of passive voice
There are several tense forms of commonly used passive voice, which are listed in table 1.
Table 1
Simple progressive tense and perfect tense
Now some people ask me, and others ask me.
Being asked is being asked.
Be asked to be asked
get through
Be asked to be asked
Be asked to be asked
In the future, you should ask everything you need.
Will be asked, will be asked
In the past, all the questions should be asked.
The future will be asked.
3. Passive voice of phrasal verbs
When a phrasal verb is converted into passive voice, it is usually regarded as a verb, and the preposition or adverb behind it cannot be disassembled or omitted. For example:
1) So far, no correct conclusion has been reached.
All the rubbish should be thrown away.
4. The passive voice of "get+-ed participle"
The structure of "get+-ed participle" emphasizes the result of the action, not the action itself, and is often used to express sudden and unexpected accidents. For example:
The boy was injured on his way home from work.
In addition, "get+-ed participle" can also be used to talk about what you do for yourself, which is active rather than passive. For example:
Get dressed and get divorced.
Engagement confusion.
I'm lost. Go and wash.
marry
5. Verbs with two objects and compound objects are changed into passive voice.
(1) When a verb with two objects is changed to the passive voice, only one object can be used as the subject at a time, and the other object can be kept. For example:
We showed our new products to the visitors. (active voice)
Visitors saw our new product. (passive voice)
Visitors can see our new products. (passive voice)
(2) When the verb with compound object becomes passive voice, the original object complement becomes the subject complement. For example:
The teacher appointed him as the Communist Youth League Secretary. (active voice)
He was appointed as the Communist Youth League Secretary. (passive voice)
6. The difference between passive voice and system table structure
This novel is well written. (System table structure)
This novel was written by Diskens. (passive voice)
7. The active voice of some verbs sometimes has passive meaning.
This book sells very well.
Ex. 2: This song sounds beautiful.
Verbs that can be used in this way include reading, wiping, washing and writing.
Ex. 3: My watch needs cleaning. My watch needs cleaning.
Verbs that can be used like need are: want, require, dislike, do, own, bind, etc.
Example 4: The meat is being cooked.
Example 5: The book written by the professor is being printed.