Keep v. 1. Keep, save
You can keep this book for a week. You can keep this book for a week.
2. keep (a certain state); continue
The window has been locked. That window is locked.
keep pace with
Don't walk too fast. I can't keep up with you. Don't walk too fast, I can't keep up with you.
Sentence form
Keep+sb. /something. +adjective
We should keep the classroom clean and tidy every day.
We should keep the classroom clean and tidy every day.
Keep+sb. +Do something.
I am sorry to have kept you waiting.
Sorry to have kept you waiting.
Go on doing sth. Go on doing sth. (without interruption)
We will continue to work hard to make our country rich and strong.
We will continue to work hard to make our country rich and strong.
Keep+ adjective
Stay healthy (stay healthy)
The difference between continuing to do something. Go on doing sth.
Both of them mean to continue to do something, sometimes they can be interchanged, but in a few cases they cannot be interchanged. The differences are as follows:
Go on doing sth. Emphasize the continuation of the state, often used with verbs indicating continuous action or verbs in a static state to indicate that something continues.
He has been living there. He has been living there.
Go on doing sth. It means repetition of actions and emphasizes that there is a gap between actions. It is often used with verbs that indicate short-lived actions.
They are laughing all the time. They are laughing all the time.
The word should often appears in middle school English textbooks. Because of its flexible usage and rich meaning, it has been the focus of college entrance examination for years. Now its specific usage is described as follows:
As the past tense of the auxiliary verb shall, should can be collocated with the first person subject in indirect speech to express the past tense and future tense. For example:
The team leader announced that we should start work soon.
The team leader announced that we would start work soon.
A week ago, I told him that I would go to Beijing the next day.
A week ago, I told him that I would go to Beijing the next day.
As a modal verb, should is usually used to express the present or future responsibility or obligation, which translates into "should" and "should". You can and should and should be used interchangeably at this time. For example:
You should finish the exam in time.
You should finish your experiment on time.
You should tell your mother about it at once.
You should tell your mother about it at once.
In a word, theory should be combined with practice.
In a word, theory should be combined with experiment.
As a modal verb, should can be used in conditional adverbial clauses to express a strong assumption, which translates into "what if" and "unexpected". At this time, should can also be placed at the beginning of the clause, that is, it should be placed before the subject, omitting the subordinate conjunction if. For example:
In case you can't come, please ask Mrs. Chen to work instead of you. In case you can't come, please ask Mrs. Chen to work instead of you. In case you can't come, please ask Mrs. Chen to take your place.
In case anyone comes, just say I'm not at home. In case anyone comes, just say I'm not at home. In case someone calls, just say I'm not at home.
In case it rains tomorrow, I won't go. In case it rains tomorrow, I won't go. )
I won't go if it rains tomorrow.
As a modal verb, should can express humility, politeness and euphemism, which can be translated as "can …" and "upside down …". For example:
I should say it would be better to try again.
I think it is better to try again.
I should say, you are mistaken. In my opinion, you are wrong.
He should expect their basketball team to win the game.
He hopes that their basketball team will win the game.
Would you like some tea? Do you like tea?
As a modal verb, should can be used to express surprise, surprise or disbelief to the speaker. Especially in rhetorical questions or some exclamations starting with why, who, how, etc. , often translated as "unexpected" and "unexpected". For example:
How should I know? How should I know about this?
Why are you late today? Why did you come so late today?
Who will I meet when I go out, not my old friend Xiao Li! Going out, I didn't expect to meet my old friend Xiao Li!
I don't see any reason why he is unhappy.
I don't understand why he is unhappy.
6.should, as a modal verb, can be used to express speculation and inference that is likely to be realized. Usually translated as "possible" and "should", it is equivalent to being expected. For example:
I think they should be home by now. I think they should be home by now.
This report was written after careful investigation, so it should be reliable.
This report was written after careful investigation, so it should be reliable.
As a modal verb, should is used in object adverbial clauses guided by so, in fear that and lest, and in conditional adverbial clauses guided by in case (that) to express "can", "may" and "will". For example:
They got up early so that they could catch the first bus in time.
They got up early so that they could catch the first bus in time.
He works hard lest he should fall behind others.
He works hard so as not to fall behind others.
We read the document over and over again so as not to miss any important points.
We read this document again and again for fear of missing any points.
He took an umbrella in case it rained.
He took an umbrella in case it rained.
As a modal verb, should can be used in the following subjunctive sentences:
1. is used in conditional adverbial clauses, indicating the opposite of future facts, forming a "if" sentence ... should ..., ... will/may/may. ) ..."。 For example:
If it rains tomorrow, the sports meeting should be postponed. If it rains tomorrow, the sports meeting should be postponed. )
If it rains tomorrow, the sports meeting will be postponed.
2. The object is followed by a verb, such as propose, arrangement, plan, decision, suggestion, command, demand, request, desire, persistence, etc. The shoulder here can also be omitted. For example:
He suggested/suggested/asked/suggested that they read the rules carefully.
He advised them to read these rules carefully.
The doctor told her to stay in bed for another week.
The doctor told her to stay in bed for another week.
He insisted that we discuss the matter at the meeting.
He insisted that we raise this question at the meeting.
3. Used in the subject clause led by that, after "it is desired/suggested/request/ordered/proposed/decision", should can also be omitted. For example:
Miss Yang was asked to give a performance at the party.
Miss Yang was invited to give a performance at the party.
It has been arranged (planned) that they will leave next week.
It has been arranged (planned) that they will start next week.
It has been decided that the meeting will be postponed until next Saturday.
It has been decided that the meeting will be postponed until next Saturday.
4. Used for predicative clauses or appositive clauses, followed by nouns, such as suggestions, motions, proposals, orders, plans, ideas, suggestions, requests, decisions, demands, etc. Should can also be omitted. For example:
We all agreed to his suggestion to visit Nanjing.
We all agreed to his suggestion to visit Nanjing. (should is used in appositive clauses)
My idea/suggestion/suggestion is that we should do more eye exercises every day.
My opinion is that we should do more eye exercises every day. (should is used in predicative clauses)
Used in subject clauses, should means "should", "must" and "unexpected" after "it was/was necessary/important/strange/added" or "it was a pity/a shame/not surprising". For example:
It is necessary to send him there at once.
It's strange that the wheel turns so slowly.
It is strange that this wheel turns so slowly.
It is a pity/shame that he should be so conceited.
It's a pity that he should be so arrogant.
9. The structure of "should have+-ed participle" is used to express the following meanings:
1. It means "should have been" and "should have been", that is, something should have been done in the past but it was not actually done. Its negative word "should not have been +-ed" means "should not have been done". For example:
Cells should be kept in some dry places. These batteries should be kept in a dry place. But I didn't actually put them in a dry place. )
You shouldn't stay in wet places. You shouldn't put those batteries in a damp place. (But they are actually put in a damp place. )
2. It means "(estimated) there should be …" and "probably already …", that is, speculation about the past. For example:
They left at nine o'clock, so they should have arrived home by now.
They left at nine o'clock and should have arrived home by now.
They should have finished the work, because they started it so early.
They started their work long ago and may have finished it by now.
It means "unexpectedly" and "unexpectedly", which means that the speaker is "surprised, surprised and suspicious" about what has happened. For example:
I am surprised that he should be so stupid. I am surprised that he should be so stupid.
I'm surprised that Mr. Harris didn't say anything about it.
I'm surprised that Mr Harris didn't say anything about it.
It's great that you have made such great achievements in recent years.
It's amazing that you have achieved so much in recent years.
In addition, should can also appear in sentence patterns such as "should be doing something" or "should be doing something all the time", indicating "should …" or expressing the speaker's dissatisfaction. For example:
Why are we sitting here doing nothing? Why are we sitting here doing nothing?
You should wear a mask. You should wear a mask.
She shouldn't work like that. She is still so weak.
She shouldn't do that. She is still very weak.
You should have been waiting for us. Why didn't you? You should wait for us. Why don't you wait?