Grammar questions in English, two sentences

Need to translate these two sentences?

The opportunity cost (no translation, only the meaning in English), moved from Q3 to Q4, is the number of A, from Q1 to Q2

Syntax: the opportinity cost of b is the subject, is is the predicate, and quantity of product a is the object. Q3 remove to Q4 and Q1 remove to Q2 are adjectives of subject and object, respectively.

They omitted that, respectively

2.Therefore, the supply and demand curve and people's actions are closely related.

Grammar: The subject is s&c and the actionThe predicate is are and the object is interational

which decide by people is the definite term of action, which is used to modify action.

Does the landlord understand?

I'm studying economics in the UK, and I'm super familiar with it

1 The opportunity cost of changing the yield of product B from Q3 to Q4 is to change the yield of product A from Q1 to Q2

2 So, the demand curve and the actions that people decide are relevant and interactive.

The second sentence should be replaced by decided.

1.The opportunity cost of moving product B out of Q3 to Q4 is equivalent to the amount of product A moving out of Q1 to Q2.

2.Therefore, the demand curve and the actions that people decide are interactive.

1.The opportunity cost of moving product B from Q3 to Q4 is equal to the amount of product A moving from Q1 to Q2.

2.Therefore, the curve of demand and ** is dependent on how people interact with each other.

The second question seems to be changed to which decide by people who are interactional

Hello, according to my personal understanding, it is (pronoun) in the sentence does not mean answers because the answers themselves are plural, so it should be the fact that it should refer to (give the answers), that is, (to give the answer), so according to the following tense:

1) has been = Present perfect tense, which means that the action happened in the past and continues to the present. So thank (you) for your answers, it has been really useful!The action of giving the answers has already happened at the time of speaking, that is, the answers were given before speaking, and the resulting consequences are embodied when speaking, and have an impact on the present, that is, because of these answers, something has been successful, solved, or right.

For example, there were a few English questions before, and the teacher was consulted in a non-direct way such as email or text message; Teachers in turn give back to the students through indirect channels. That is, from asking the problem to giving back the problem, it took a while to solve the problem.

2) is = simple present tense, according to the semantics, the action should be given when speaking, that is, (give the) answers This action occurs while speaking, and this answer immediately solves some problems. For example, if you ask the teacher a few English questions, the teacher can give the answer to solve the problem that you don't understand. That is, giving and solving is almost at the same time as the speech takes place.

The two sentences use different tenses. The first sentence uses the present perfect tense, which is useful to emphasize that the event has had a certain impact and result. The second sentence uses the simple present tense, which is useful to evaluate it objectively. But it doesn't have to make an impact.

One is in the present perfect tense and the other is in the simple present tense.

thank for your answers, it has been really useful! thank for your answers, it is really useful!

Both sentences are in Chinese, thank you, it's really useful!

Definition of key words.

useful

Useful; Beneficial; Applied;

Example. it's a useful introduction to an extremely complex subject.

This is a useful introductory tutorial to an extremely complex subject.

Both of these sentences are correct, the first one is used in the present perfect tense, and the present perfect tense indicates the effect of the past action on the present, or the present retains the result of the past action. And the general present tense means to see often, or habitual actions, or states. The present perfect tense denotes the present state and not the past state, so it can denote the present tense and the two sentences can be used interchangeably.

In fact, the emphasis is different, the former means that after he gave, this kind of help immediately appeared, and by the time he spoke, he had already received help. The second emphasis is that what he shares is particularly important and very useful to people, whether it is past, present or future, and presents an objective fact.

1) thanks for your answers. it has been really useful.

The second half of the sentence is in the present perfect tense, indicating that your answer has been useful so far.

2). thanks for your answers . it is really useful.

In the simple present tense, it has always been useful.

The second way of saying it is usually used! it’s really useful!Also, the first sentence of thank should be changed to: thanks!

The tense is different, has benn is the present perfect tense; is in the simple present tense.

The first one is in the present perfect tense, and it should be thanks for sth for something.

After that, because still is an adverb, similarly ever is also after.

This sentence is correct.

Delete still, here is basically a kind of Chinese English, if you want to express the original meaning, you can add a again, put again after the disease.

still after the auxiliary verb That's fine.

The question is whether the predicate verb fail can be used in conjunction with up to now?

In my opinion, up to now should be removed

Or change fail to a verb that indicates a state.

1.Because there is already is is in front of it, a sentence can only have one predicate verb.

2.Only should be just... meaning. She didn't know until her son had been married for a long time.

3.The rising sales are a good indication of the popularity of this product in the market.

Hello. 1.There is is is is in the original question, so it is taking care of , be doing sthI am doing something.

2.only here translates as: cai.

Whole sentence: The mother did not know until her son had been married long after he had been married.

3.The continued growth in sales is an indication of how well the product is being sold in the market.

The first one doesn't quite understand it yet, and the second one isn't upside down. It's not if it means if it doesn't.

Q: This table is not as wide as it is.

the desk is not as wide as it is long.

Can the second AS be said like this later? It's a little awkward.

A: There are no grammatical errors.

The first as is an adverb that modifies the wide adjective, and the second as is a conjunction conjunctive sentence it is long

But this sentence itself is problematic, the width of the table must not be as long as the length, if the length is longer than the length, the width will soon become longer.

Q: The staff donated 200 yuan each

Can the each do adverb here be placed in this position?

A: each can be placed in this position.

Each should have been placed at the beginning of the sentence, each staff donated 200 yuan. Grooming staff. This is placed at the end of the sentence to modify the whole sentence.

The first sentence is no.

It can be changed to: the desk is not as wide as its length

The second sentence is correct

The first sentence should read: The desk is not as wide as its length

What does the second sentence mean, does it work?

each staff donated 200 yuan.

as and the same.

So to speak.

2.Adverbs can modify adverbs, verbs, participles, pronouns.

each: each (table individual).

eachstaff

donated

200yuan

1. Five minutes later is in the past tense and in the future tense is in five minutes.

2. In time is to complete a thing as soon as possible, and on time means to complete things within the specified time.

3. Since the verbs after know are all +ing.

4. No one is about people, and none is about saying anything.

5. It's exactly the same.

6. Like in the former is a verb, and like in the latter is an adjective.

7. Two forms: when + clause, (note the comma) main clause.

or main clause + when + clause.

It can be that the subject will be present (the main clause is in the future tense, and the clause is in the present tense) indicates that the main clause will be done on the basis of realizing the clause;

The Lord has passed by, which is the usage of the past tense;

The main clause is in the simple past tense and the clause is in the past continuous tense, indicating that the main clause happened (past) while the clause was happening.

Your classmates max

You see, the main clause is you as the subject, not the first person, so the negative part should vary with the main clause, excluding c and d

Then seldom has a negative meaning, a negation preposition, and the main clause is a negative sentence.

So, with did you

To be honest, this kind of nonsense topic can be chosen in two ways, different tones!

you told me (that) she seldom did the cooking, didn't you?

didn't you tell me before that ..

you told me (that) she seldom did the cooking, did you?

you must be joking when you told me that ..

Different tones and meanings, all right!

Choose C. Use the direct method. There are two definite clauses in this sentence, and the first blank is the introductory word of the first definite clause.

In the first definite clause, the subject-verb-object is complete, and the clause does not lack noun sentence components, so the blank should be filled in with the relative adverb as the adverbial clause. Among the four options, only the first empty space of item c is a relative adverb, and the rest are relative pronouns (relative pronouns are used as subjects, objects or predicates in clauses, not adverbs). In this question, C uses where to refer to the antecedent word london, and makes a place adverbial in the clause to indicate that the action of withdrawing money takes place in London.