Lecture Notes: Finally Mastering Do, Did, Does

Overview

• Tenses: The foundation of language and reflection of verb projections.
• Is, Am, Are, Was, Were, Do, Did, Does are aux verbs.
• Using the articles correctly: "A", "An", "The".

Introduction

• "Do" is used to indicate action.
• "Do" is used for plural subjects and "Does" for singular subjects.
• "Did" is used for the past tense.
• Several types of questions exist where the answer could be yes or no.

Usage of Could, Should, Would

Could:

1. Past ability:
   • Could plus v1: When one could do something in the past (e.g., I could climb trees when I was younger.)
2. Modified probability:
   • Could be: Possibly (e.g., He could be busy.)
3. Past possibility:
   • Could have: When something could have happened in the past but didn't (e.g., He could have passed the exam if he had studied hard.)

Should:

1. Advice or suggestion:
   • Should plus v1: Suggesting something to someone (e.g., You should eat healthy food.)
2. Expectation:
   • When you have an expectation from someone (She should respect her elders.)
3. Moral obligation:
   • (e.g., You should not talk during the movie.)

Would:

1. Expectation/Condition:
   • Hypothetical conditions or future expectations (e.g., We would go if we had time.)
2. Habit (Past):
   • Past habits (e.g., As a child, he would play for hours.)

Articles

• Correct usage of articles in English:
  • Use 'A' and 'An' with the appropriate consonant and vowel sounds/letters.
  • Differentiation in speech and written English.
  • Articles must be used according to different sounds.

Practice

• Verb Forms: Three important forms are:
  • Base form of the verb
  • Past form of the verb
  • Past participle form of the verb
• The most important part to always remember: is, am, are / would / could be in the future.

Types of Present Tense

1. Simple
   • Ends in ta, ti, te
   • Rule: "Do" for plural, "Does" for singular.
2. Continuous
   • Adding ING to the verb form
   • Rule: Singular with Are, Am, Is and ING
3. Perfect
   • Third form of the verb + have, has
   • Completed action
4. Perfect Continuous
   • Third form of the verb + been + ING
   • Completion + Continuation