Unit 2: Tenses - Subjective Questions

Tense is the grammatical form of a verb that shows the time of an action or state. It helps the listener or reader understand when an event occurs.

The three main divisions are:

• Present tense: Shows an action happening now, regularly, or generally. Example: She teaches English.
• Past tense: Shows an action that happened before the present time. Example: She taught English yesterday.
• Future tense: Shows an action that will happen later. Example: She will teach English tomorrow.

Tenses are important because they make communication clear, logical, and accurate. Incorrect use of tense may change the meaning of a sentence or create confusion about the time of an event.

The simple present tense is used for habits, routines, general truths, permanent situations, and scheduled events.

Formation:

• Affirmative: Subject + base verb; add -s or -es with a singular third-person subject. Example: He plays cricket.
• Negative: Subject + do not or does not + base verb. Example: She does not watch television.
• Interrogative: Do or Does + subject + base verb? Example: Do they live here?

Uses:

• Habits: I read every evening.
• General truths: The sun rises in the east.
• Permanent situations: She works in a bank.
• Timetables: The train leaves at six o'clock.

The main verb remains in its base form after does, does not, or doesn't.

The present continuous tense describes an action that is happening at the time of speaking, a temporary situation, or a planned future arrangement.

Formation: Subject + am, is, or are + verb-ing.

• Affirmative: I am writing a letter.
• Negative: They are not playing football.
• Interrogative: Is she preparing dinner?

Uses:

• Action happening now: The students are listening carefully.
• Temporary action: He is staying with his uncle this week.
• Developing situation: The city is growing rapidly.
• Fixed future arrangement: We are meeting the principal tomorrow.

The verb must be used in its -ing form, and the appropriate form of be must agree with the subject.

The present perfect tense is formed with has or have and the past participle of the verb. It expresses a completed action connected with the present.

• Example: She has completed her assignment.
• Use: past experience, recently completed actions, or actions whose results are visible in the present.

The present perfect continuous tense is formed with has been or have been and the -ing form of the verb. It emphasizes the duration or continuity of an action.

• Example: She has been completing assignments for three hours.
• Use: an action that began in the past and is still continuing or has recently stopped.

Difference:

• I have read the book emphasizes completion.
• I have been reading the book for two hours emphasizes duration or ongoing activity.

Words such as since, for, already, and yet commonly occur with these tenses.

The simple past tense describes an action that was completed at a definite time in the past.

Formation:

• For regular verbs, add -ed: work – worked.
• Irregular verbs have special forms: go – went, write – wrote.
• Negative: Subject + did not + base verb. Example: He did not attend the meeting.
• Interrogative: Did + subject + base verb? Example: Did you see the film?

Uses:

• Completed past action: She visited Delhi last year.
• Series of past actions: He entered the room, greeted everyone, and sat down.
• Past habit: We played outside every evening.
• Historical event: The country became independent in 1947.

After did or did not, the main verb must always be in its base form.

The past continuous tense is formed with was or were followed by the verb ending in -ing.

Formation:

• Affirmative: She was reading a novel.
• Negative: They were not making noise.
• Interrogative: Was he waiting for the bus?

Uses:

• An action in progress at a particular time in the past: At eight o'clock, I was studying.
• A background action interrupted by another action: I was sleeping when the phone rang.
• Two simultaneous past actions: She was cooking while he was cleaning.

In such sentences, the past continuous usually presents the longer background action, while the simple past presents the shorter or interrupting action.

The past perfect tense is formed with had + past participle. It shows that one past action happened before another past action.

• Example: The train had left before we reached the station.

The past perfect continuous tense is formed with had been + verb-ing. It emphasizes the duration of an action that continued up to a point in the past.

• Example: They had been waiting for an hour before the bus arrived.

Comparison:

• Past perfect emphasizes completion or order: She had finished the work before lunch.
• Past perfect continuous emphasizes duration or continuity: She had been working for three hours before lunch.

Both tenses help establish the correct sequence of past events. Words such as before, after, by the time, and until are often used with them.

Future time can be expressed in several ways:

• Will + base verb: Used for decisions made at the moment, promises, predictions, and offers. Example: I will help you.
• Be going to + base verb: Used for prior intentions and predictions based on present evidence. Example: They are going to start a business.
• Present continuous: Used for fixed future arrangements. Example: We are visiting the museum tomorrow.
• Simple present: Used for timetables and official schedules. Example: The examination begins at nine o'clock.
• Future continuous: Used for an action that will be in progress at a future time. Example: This time tomorrow, I will be travelling.
• Future perfect: Used for an action completed before a future time. Example: She will have submitted the form by Friday.

The choice depends on whether the speaker wants to express a decision, intention, arrangement, prediction, duration, or completion.

The future continuous tense is formed with will be + verb-ing. It describes an action that will be in progress at a particular future time.

• Affirmative: I will be attending the seminar at ten o'clock.
• Negative: She will not be using the office tomorrow.
• Interrogative: Will they be staying with us?

The future perfect tense is formed with will have + past participle. It describes an action that will be completed before a specified future time.

• Affirmative: He will have finished the project by Monday.
• Negative: They will not have reached the destination by noon.
• Interrogative: Will you have completed the work by then?

The future continuous emphasizes an action in progress, whereas the future perfect emphasizes completion before a future deadline.

The three simple tenses express actions at different times.

The simple present often uses do or does in negative and interrogative sentences. The simple past uses did, while the simple future uses will. In each case, the tense must agree with the time expression and the intended meaning.

Time expressions provide clues about when an action happens and help the speaker select the correct tense.

• Simple present: usually, always, every day, often. Example: He usually walks to work.
• Present continuous: now, at the moment, currently. Example: He is walking to work now.
• Simple past: yesterday, last week, ago, in 2020. Example: He walked to work yesterday.
• Present perfect: already, just, yet, ever, never. Example: He has already completed the task.
• Future forms: tomorrow, next month, soon, later. Example: He will travel next month.
• Perfect continuous forms: since and for. Example: She has been studying for two hours.

Time expressions are helpful guides, but meaning and context must also be considered. A single expression may sometimes be used with different tenses when the context changes.

An imperative sentence expresses a command, request, instruction, advice, warning, or prohibition. The subject you is usually understood rather than stated.

Affirmative imperative: Use the base form of the verb.

• Command: Open the window.
• Request: Please help me.
• Advice: Take regular exercise.

Negative imperative: Use do not or don't + base verb.

• Do not touch the switch.
• Don't be late.

For a more formal or emphatic negative command, use never + base verb or do not ever + base verb.

• Never waste your time.

The verb after do not or don't remains in the base form. The imperative may end with a full stop or an exclamation mark, depending on the force of the expression.

Negative imperatives are generally formed with do not or the contracted form don't followed by the base verb.

• With ordinary verbs: Don't waste water.
• With be: Don't be careless.
• With have: Don't have too much sugar.
• With do: Don't do that.

The formal form do not is suitable for rules, notices, and official instructions, while don't is common in everyday speech.

Examples of negative instructions include:

• Do not enter the laboratory without permission.
• Don't make unnecessary noise.
• Never ignore safety instructions.

A negative imperative prohibits an action. It should not be confused with an ordinary negative statement such as You do not enter the room, which describes a habit or fact rather than directly giving a command.

A question tag is a short question added to the end of a statement to seek confirmation or agreement.

General rules:

• A positive statement takes a negative tag: She is ready, isn't she?
• A negative statement takes a positive tag: She isn't ready, is she?
• The auxiliary verb in the statement is repeated in the tag.
• The subject is changed into a suitable pronoun.
• If there is no auxiliary verb, use do, does, or did.

Examples by tense:

• Present: He plays well, doesn't he?
• Present continuous: They are working, aren't they?
• Past: She visited us, didn't she?
• Past continuous: He was sleeping, wasn't he?
• Future: You will attend, won't you?

Question tags usually have a rising intonation when the speaker is genuinely asking and a falling intonation when the speaker expects agreement.

In the simple present tense, use do or does in the tag when the statement does not contain an auxiliary verb.

• Positive statement: You speak English, don't you?
• Positive statement with a singular third-person subject: She sings well, doesn't she?
• Negative statement: He does not drive, does he?

In the present continuous tense, repeat the appropriate form of be.

• I am disturbing you, aren't I?
• She is coming, isn't she?
• They are not waiting, are they?

The tag must have the opposite polarity from the statement. The pronoun in the tag must agree with the subject of the statement. In standard English, the special form aren't I? is commonly used after a positive statement beginning with I am.

For the simple past tense, use did or didn't when the statement contains an ordinary verb.

• They arrived early, didn't they?
• She didn't call, did she?

For the past continuous tense, repeat was or were.

• He was studying, wasn't he?
• They weren't arguing, were they?

For the past perfect tense, repeat had.

• She had completed the work, hadn't she?
• They had not left, had they?

The tag must be opposite in form to the statement: positive statement followed by a negative tag, and negative statement followed by a positive tag. The auxiliary must match the tense, and the subject must be represented by the correct pronoun.

Future question tags are formed by repeating the auxiliary used in the statement.

With will:

• Positive: You will join us, won't you?
• Negative: She will not complain, will she?

With shall:

• We shall meet again, shan't we?

In modern English, shall is less common in ordinary statements, but it may occur with I and we in formal or traditional usage.

With be going to:

• He is going to travel, isn't he?
• They are not going to stay, are they?

The tag for be going to uses the appropriate present form of be, because the construction contains am, is, or are. The polarity rule remains unchanged.

Some expressions require special treatment when forming question tags.

• After I am, the usual tag is aren't I? Example: I am late, aren't I?
• After a negative word such as never, hardly, scarcely, or nobody, the statement is treated as negative, so the tag is positive. Example: He never lies, does he?
• With there is or there are, use there in the tag. Example: There is a problem, isn't there?
• With this or that, use it. Example: This is your book, isn't it?
• With these or those, use they. Example: Those are your keys, aren't they?
• With an imperative, use tags such as will you, won't you, or shall we. Example: Close the door, will you? and Let's begin, shall we?

These cases depend on meaning, polarity, and the grammatical structure of the statement.

The corrected sentences are:

• (a) She goes to college every day. The simple present is used for a routine, and she requires the third-person singular form goes.
• (b) I know the answer. The verb know is generally a stative verb and is not normally used in the continuous form.
• (c) They have finished the work. The subject they takes have, not has, in the present perfect tense.
• (d) He did not go there. After did not, the main verb must be in the base form go, not the past form went.
• (e) We will meet tomorrow. After will, the main verb must remain in the base form meet.

These corrections show the importance of subject–verb agreement and the correct auxiliary pattern in each tense.

(a) She writes letters.

• Negative: She does not write letters.
• Interrogative: Does she write letters?

(b) They were watching television.

• Negative: They were not watching television.
• Interrogative: Were they watching television?

(c) He completed the task.

• Negative: He did not complete the task.
• Interrogative: Did he complete the task?

(d) We will attend the meeting.

• Negative: We will not attend the meeting.
• Interrogative: Will we attend the meeting?

When does or did is used, the main verb returns to its base form. With continuous and future forms, the auxiliary is moved before the subject, and the main verb form remains unchanged.