Lesson 24: Unit 82 - Present Perfect / Past Simple
Learn when to use the Present Perfect and when the Past Simple through texts, dialogues and exercises taken directly from the Kabinata curriculum.
About this lesson
In this lesson you will learn the difference between the Present Perfect and the Past Simple in English. You will master when to use the Present Perfect for actions with no specific time stated, for actions continuing up to now and for results in the present. You will also see when the Past Simple is the right choice – for completed actions in the past, for a sequence of events and for stories. Through authentic examples from the teacher and practical exercises you will consolidate the correct use of the two tenses in real communication.
40 minutes
What you'll learn
Understand the difference between the Present Perfect and the Past Simple
Use the Present Perfect for actions continuing up to the present
Use the Past Simple for completed actions at a definite moment in the past
Recognise key words such as 'ever', 'never', 'yet', 'ago', 'last week' and link them to the correct tense
Describe a sequence of events in the past with the Past Simple
Read and understand a text in which the two tenses alternate
Lesson vocabulary
introduceComputers were first introduced to the public in the early 1980s.
powerfulThe first computers weren't very powerful.
memoryThey didn't have much memory.
expensiveEarly computers were often quite expensive.
typewriterMost computers were used mostly as expensive typewriters.
applicationComputers have become powerful machines with very practical applications.
bookkeepingProgrammers have created programs which do everything – from teaching foreign languages, to bookkeeping.
convenientCommunication has never been easier, faster, and more convenient.
evolveComputers have evolved into an international World Wide Web of knowledge.
communityWe have started creating international communities on-line.
interactiveGames have become faster, more exciting interactive adventures.
user-friendly'This computer is very user-friendly,' said Janet.
composeJanet tried composing computer music by arranging the notes electronically.
inventWhile he was on the boat, Sam invented a game.
sequenceWe use the past simple when we talk about a sequence of events.