Unit4 - Subjective Questions

The modal verbs used for ability differ based on tense and specificity:

• Can: Used for general ability in the present. It expresses that someone has the skill or capacity to do something.
  • Example: "She can speak three languages."
• Could: Used for general ability in the past. It indicates that someone possessed a skill previously.
  • Example: "When I was younger, I could run a mile in five minutes."
• Be able to: Can be used in all tenses (was able to, will be able to, have been able to) and is more formal. It is specifically required for tenses where 'can' implies no form (like the perfect tenses or future).
  • Example (Future): "I will be able to attend the meeting tomorrow."
  • Example (Specific Past Achievement): "Despite the rain, we were able to (managed to) reach the summit." (Note: In specific past achievements, 'could' is generally not used affirmatively).

While both indicate obligation, the source of the obligation differs:

1. Must (Internal Obligation):

   • Used when the speaker personally feels the necessity or authority.
   • It implies that the speaker thinks it is important.
   • Example: "I must call my mother today; it's her birthday." (The speaker feels the urge).

2. Have to (External Obligation):

   • Used when the obligation comes from an outside force, such as a rule, law, or third party.
   • The speaker is reporting a fact rather than a personal feeling.
   • Example: "I have to wear a uniform to work." (It is a company rule, not the speaker's choice).

Past modals are used to make logical deductions about past events based on present evidence.

• Must have + Past Participle:

  • Used when the speaker is almost 100% certain that something happened in the past based on logic.
  • Example: "The streets are wet. It must have rained last night."

• Can't have / Couldn't have + Past Participle:

  • Used when the speaker is almost 100% certain that something did not happen.
  • Example: "She can't have driven to work; her car is still in the driveway."

Key Difference: 'Must have' affirms a high probability of occurrence, whereas 'can't have' affirms a high probability of non-occurrence (impossibility).

These modals express varying degrees of certainty regarding a future or present possibility:

1. May:

   • Expresses a good possibility (often considered around 50% likely).
   • Example: "It may snow later." (It is quite likely).

2. Could:

   • Expresses a theoretical possibility or a suggestion of possibility. It is often comparable to 'might' but can sometimes suggest a slightly higher probability depending on context.
   • Example: "We could see a delay in the schedule."

3. Might:

   • Expresses the weakest possibility (often less than 30% likely). It suggests something is possible but improbable.
   • Example: "I might win the lottery, but I doubt it."

Hierarchy of Certainty (General): May > Could > Might (though 'could' and 'might' are often interchangeable in casual speech).

These modals are used to advise, but they carry different tones and implications:

• Should:

  • The most common and neutral way to give advice or an opinion.
  • Example: "You should study for the exam."

• Ought to:

  • Very similar to 'should' but slightly more formal or objective. It often implies a moral duty or what is generally considered 'right'.
  • Example: "You ought to apologize for your mistake."

• Had better:

  • Stronger than both 'should' and 'ought to'.
  • It implies a warning or negative consequence if the advice is not followed.
  • Example: "You had better leave now, or you will miss the train." (Implied consequence: missing the train).

Structure: Modal + have + Past Participle (V3)

1. Should have (Regret/Criticism):

   • Indicates that it would have been a good idea to do something in the past, but it was not done.
   • Used to express regret about one's own actions or to criticize someone else's.
   • Example: "I should have studied harder." (I didn't study hard, and I regret it).

2. Could have (Lost Possibility/Capability):

   • Indicates that someone had the ability or opportunity to do something in the past, but they did not do it.
   • Example: "I could have travelled around the world, but I decided to buy a house instead."

Key Distinction: 'Should have' focuses on the advisability of the past action (moral/pragmatic failure), while 'could have' focuses on the capability or possibility that was ignored.

These modals change the tone of a request from informal to formal:

1. Can (Least Formal):

   • Used between friends or equals.
   • Example: "Can you pass the salt?"

2. Will (Informal/Standard):

   • Standard way of asking, often implies willingness.
   • Example: "Will you help me with this box?"

3. Could (Polite):

   • More tentative and polite than 'can'.
   • Example: "Could you please open the window?"

4. Would (Most Formal/Polite):

   • Considered very polite and soft.
   • Example: "Would you mind turning down the music?"

Order of Politeness: Can < Will < Could < Would (Note: Context and intonation play a major role, but 'Could' and 'Would' are universally safer for formal contexts).

Possessive Determiners (Adjectives):

• Usage: They are placed before a noun to show ownership or relationship.
• List: my, your, his, her, its, our, their.
• Structure: [Possessive Determiner] + [Noun]
• Example: "This is my book."

Possessive Pronouns:

• Usage: They replace the noun (and the determiner) to avoid repetition. They stand alone.
• List: mine, yours, his, hers, its, ours, theirs.
• Structure: [Noun] + [Verb] + [Possessive Pronoun] (or standing alone).
• Example: "This book is mine."

Difference: A possessive determiner needs a noun to follow it; a possessive pronoun replaces the noun entirely.

Demonstrative determiners point to specific nouns and indicate their proximity to the speaker (distance) and their quantity (number).

Examples:

• "This car needs repair." (One car, close by).
• "That idea was interesting." (One idea, in the past/abstract distance).
• "These apples are fresh." (Many apples, holding them).
• "Those birds are flying south." (Many birds, far away).

While 'each' and 'every' are often interchangeable, they have distinct focuses:

1. Each:

   • Focuses on the individual members of a group separately.
   • Used with small numbers (two or more).
   • Example: "Each student received a certificate." (Emphasis on the individual receiving it).

2. Every:

   • Focuses on the group as a whole (similar to 'all').
   • Used with larger numbers (three or more).
   • Used to express frequency.
   • Example: "Every student passed the exam." (Emphasis on the collective success).
   • Frequency: "I go to the gym every day." (Cannot use 'each' here).

General Rule:

• Some: Generally used in positive (affirmative) sentences with countable plural nouns and uncountable nouns.
  • Example: "I have some friends." / "I need some water."
• Any: Generally used in negative sentences and questions.
  • Example: "I don't have any money." / "Do you have any questions?"

Exceptions:

1. Offers and Requests (Some): When asking a question where we expect a 'yes' answer, or when offering something, we use 'some'.
   • Example: "Would you like some coffee?" (Offer)
   • Example: "Can I have some water?" (Request)
2. 'It doesn't matter which' (Any): In positive sentences, 'any' means it doesn't matter which specific one is chosen.
   • Example: "Call me any time." (It doesn't matter when).

These determiners express large quantities, but their usage depends on the type of noun (Countable vs. Uncountable).

• Many:

  • Used with Plural Countable Nouns.
  • Mostly used in questions and negative sentences (though possible in formal affirmatives).
  • Example: "How many apples are there?" / "There aren't many people."

• Much:

  • Used with Uncountable Nouns.
  • Mostly used in questions and negative sentences.
  • Example: "How much water do you need?" / "We don't have much time."

• A lot of:

  • Used with both Countable and Uncountable nouns.
  • Preferred in positive (affirmative) sentences over 'much' and 'many' in informal/neutral English.
  • Example: "She has a lot of friends." (Natural) vs "She has many friends." (Formal).

These determiners are used with countable nouns but convey different meanings regarding quantity and tone:

1. Few (Negative connotation):

   • Means "hardly any" or "not enough".
   • Example: "He has few friends." (He is lonely; almost no friends).

2. A few (Positive connotation):

   • Means "some" or a small number (but enough).
   • Example: "He has a few friends." (He is not lonely; he has a social circle).

3. The few (Specific):

   • Means "not many, but all of those that exist".
   • Example: "The few friends he has are very loyal." (The small specific group).

These determiners are used with uncountable nouns and follow the same logic as few/a few/the few:

1. Little (Negative connotation):

   • Means "hardly any" or "insufficient amount".
   • Example: "There is little hope of recovery." (Almost no hope).

2. A little (Positive connotation):

   • Means "some" or a small amount (better than nothing).
   • Example: "I have a little money left." (Enough to buy something).

3. The little (Specific):

   • Means "not much, but all of that amount".
   • Example: "He spent the little money he had on books."

Either and Neither are distributive determiners used to talk about two things/people.

1. Either:

   • Means "one or the other" (of two).
   • Used with a singular noun and takes a singular verb.
   • Example: "Either day is fine for me." (Monday or Tuesday).

2. Neither:

   • Means "not the one and not the other" (zero of two).
   • Used with a singular noun and takes a singular verb.
   • Example: "Neither candidate is suitable." (Candidate A is bad, Candidate B is bad).

Note: When used as 'Either of/Neither of' + plural noun/pronoun, the verb can technically be plural in informal English, but as determiners directly before a noun, the noun is always singular.

Sample Dialogue:

Alice: This (Demonstrative Determiner) year's office party is coming up. We should (Modal - Suggestion) start planning the venue.

Bob: Agreed. We must (Modal - Obligation) book the hall by Friday, or we'll lose our deposit.

Alice: I checked the schedule. Every (Distributive Determiner) weekend in December is already busy, but we could (Modal - Possibility) host it on a Thursday night.

Bob: Thursday might (Modal - Possibility) work, but some (Quantitative Determiner) employees live far away.

Alice: True. We have to (Modal - Obligation) consider their commute.

Bob: Shall (Modal - Offer/Suggestion) I send out a survey to check preferences?

Alice: Yes, please do. That (Demonstrative Determiner) would be very helpful.

Bob: Okay, I will handle it today.

These quantifiers express totality but have different grammatical positions:

1. All:

   • Usage: Plural countable nouns or uncountable nouns.
   • Position: Before the article/possessive.
   • Structure: All + (the/my) + Noun.
   • Example: "All the students passed." / "All my money is gone."

2. Whole:

   • Usage: Mostly singular countable nouns.
   • Position: After the article/possessive.
   • Structure: The/My + Whole + Noun.
   • Example: "The whole class passed." / "I spent my whole life here."

3. Every:

   • Usage: Singular countable nouns.
   • Position: Replaces the article.
   • Example: "Every student passed." (Not 'The every student').

The distinction lies in countability:

1. Fewer:

   • Used with plural countable nouns.
   • It refers to a smaller number of individual items.
   • Example: "There are fewer cars on the road today." (You can count cars).

2. Less:

   • Used with uncountable nouns.
   • It refers to a smaller amount, degree, or quantity.
   • Example: "I drink less coffee than I used to." (Coffee as a liquid volume is uncountable).

Note: In informal speech, 'less' is often used for countable nouns (e.g., "less items"), but strictly grammatically, 'fewer' is required for countable items.

1. Shall:

   • Used primarily in the first person (I/We) for offers and suggestions.
   • Offer: "Shall I carry that bag for you?"
   • Suggestion: "Shall we go out for dinner?"

2. Will:

   • Used to make confident offers or promises.
   • Offer: "I will get the phone."
   • Invitation (Informal): "Will you come to my party?"

3. Would:

   • Used for polite invitations and offers.
   • Invitation: "Would you like to come to dinner?"
   • Offer: "Would you like a cup of tea?"

Comparison: 'Shall' is about the speaker's service to the listener. 'Would' is about asking the listener's preference politely. 'Will' is a direct statement of intent or informal invitation.

Corrections and Explanations:

1. Error: "He must to go..."

   • Correction: "He must go to the doctor."
   • Rule: Pure modals (must, can, should) are followed by the bare infinitive (without 'to').

2. Error: "I have much friends..."

   • Correction: "I have many (or a lot of) friends in the city."
   • Rule: 'Friends' is a countable noun. 'Much' is used for uncountable nouns; 'many' is for countable.

3. Error: "She don't have some money."

   • Correction: "She doesn't have any money."
   • Rule: In negative sentences (don't/doesn't), we generally use 'any', not 'some'.

4. Error: "You should to study..."

   • Correction: "You should study harder."
   • Rule: Like 'must', 'should' is a modal verb and is never followed by 'to'. (Unlike 'ought to').