HAVE TO_HAS TO_HAD TO - External Obligation

Duration: 6 min

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Module outline

  1. About Course: About the Course
  2. Paper 1 | Quantitative Aptitude: Speed Mathematics and Basic Mathematics, Percentage, Ratio and Proportion (Ratios), Powers and Exponents (Surds and Indices), Logarithm, Sequence and Series (Series), Mensuration and Geometry, Data Interpretation, Average, Arithmetic
  3. Paper 1 | Logical Reasoning: Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Series (Number and Letter Series) (Numerical Relations and Reasoning), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Analogy, Cubes & Dices, Syllogisms
  4. Paper 1 | English Language: Vocabulary, Noun, Pronoun, Verb, Adjectives, Adverb, Preposition, Conjunction, Interjection, Articles, Tenses, Subject Verb Agreement (Verb Noun Agreement), Modals, Determiner, Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Construction
  5. Paper 1 | Unit Tests:
  6. Paper 1 | Full-Length Mock Tests:
  7. Paper 2 | Engineering Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Linear Algebra, Calculus, Permutation and Combination, Probability, Statistics
  8. Paper 2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  9. Paper 2 | Computer Architecture: Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design
  10. Paper 2 | Programming and Data Structures: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  11. Paper 2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  12. Paper 2 | Theory Of Computation/Automata Theory: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory
  13. Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  14. Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  15. Paper 2 | DataBase Management System/DBMS: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery
  16. Paper 2 | Computer Networks: Introduction to CN, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics
  17. Paper 2 | CS/IT Sectional Mock Tests:
  18. Complete Paper Full Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video presents a lesson on the grammatical use of 'have to', 'has to', and 'had to' to express external obligation. The instructor explains that these modal verbs are used for obligations arising from external sources such as rules, laws, or other people's requirements, in contrast to 'must', which is used for internal conviction. The lesson is structured into three main sections: Present External Obligation, Circumstantial Necessity, and Past Obligation. Each section provides examples in the present, present, and past tenses respectively, with the context of the obligation clearly stated in parentheses. The video uses a slide with a dark background and yellow text, and a small video feed of the instructor is visible in the bottom right corner.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a presentation slide titled 'HAVE TO / HAS TO / HAD TO : External Obligation'. The instructor begins by explaining the core concept: 'have to' expresses obligation from external sources like rules, laws, or other people's requirements, unlike 'must' which comes from internal conviction. The slide is divided into three sections. Section 01, 'Present External Obligation', provides examples such as 'She has to submit the form today (office policy)' and 'We have to wear uniforms (school rule)'. Section 02, 'Circumstantial Necessity', gives examples like 'They have to leave early (train schedule)' and 'You have to speak louder (noisy environment)'. The instructor is visible in a small window in the bottom right corner, speaking and gesturing.

  2. 2:00 – 5:00 02:00-05:00

    The instructor continues to explain the examples on the slide. The focus shifts to the third section, 'Past Obligation', which is introduced with the heading 'Past Obligation'. The examples provided are: 'I had to call the doctor last night (emergency)', 'We had to cancel the picnic (bad weather)', and 'She had to work overtime (project deadline)'. The instructor uses hand gestures to emphasize the points. The slide remains static, showing the complete list of examples for all three categories. The instructor's voice is clear and she explains the context for each example, reinforcing the concept of external obligation.

  3. 5:00 – 5:52 05:00-05:52

    In the final segment, the instructor summarizes the lesson. She reiterates the key difference between 'must' and 'have to', emphasizing that 'have to' is for external obligations. She points to the examples on the slide, specifically highlighting the 'Present External Obligation' section. The instructor uses a red pen tool to underline the word 'must' in the introductory text, reinforcing the contrast. She then moves to the 'Past Obligation' section, pointing out the examples. The video ends with the instructor concluding her explanation of the three categories of obligation.

The video provides a clear and structured lesson on the use of 'have to', 'has to', and 'had to' to express external obligation. It effectively contrasts this with 'must' and organizes the content into three logical categories: present obligations from rules, present necessities due to circumstances, and past obligations. The use of a static slide with well-organized examples and the instructor's clear narration makes the grammatical concept easy to understand and remember.

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