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The 1202 alarm: narrative tenses for telling an incident story

Tell an incident story in order with narrative tenses in this B2 English for IT lesson plan on the 1202 alarm.

Grammar
The past simple for the events, the past continuous for the background (was watching), the past perfect to jump back (had stopped) and timeline words such as by then.
Topic
Incident timelines, from the 1202 alarm during the Apollo 11 landing to a fictional startup's flash-sale incident, with words such as overload, abort and go-ahead.
Activities
The alarm's story, an engineer's incident notes, a talk on why Houston said go, self-checking drills, a chat and a story wheel, then an incident story to write and record.

What's inside

  1. Chapter 1Warm-up: When the Alarm Goes Off

    • PictureUnlock
    • Open a box and talk about your workOpen the boxUnlock
    • Study the incident vocabularyVocabularyTry it
    • Choose the word for each pictureChoose by pictureUnlock

  2. Chapter 2The Story: Alarms on the Way Down

    • Read the story of the 1202 alarmArticleUnlock
    • Choose the correct answer about the storyQuizUnlock

  3. Chapter 3At Work: Our Own 1202

    • Read Diego's notes for the reading clubArticleUnlock
    • True or false? Check Diego's notesTrue or falseUnlock
    • Put the events in the correct order: Diego's incident timelineDrag and dropUnlock

  4. Chapter 4Listen: Why Did Houston Say Go?

    • Listen to Lena and Diego at the reading clubListeningTry it
    • Transcript, for the teacherUnlock
    • Choose the correct answer about the conversationQuizUnlock

  5. Chapter 5Grammar: Was Doing, Did, Had Done

    • Study the scheme: narrative tensesGrammar schemeTry it
    • Choose the correct option to complete the storyChoose the optionTry it
    • Choose the correct answer: what happened first?QuizUnlock
    • Rewrite the two sentences as one: fill in the gaps with the past perfectFill in the gapsUnlock
    • Choose the correct timeline wordChoose the optionUnlock
    • Fill in the gaps in the postmortem timelineFill in the gapsUnlock

  6. Chapter 6Speak Up: Tell It in Order

    • Choose the right replies: tell a colleague what happenedChatTry it
    • Spin the wheel: tell the story and discussSpin the wheelUnlock

  7. Chapter 7Homework: Your Incident Story

    • Read your phrase bankReal-life documentTry it
    • Choose the correct option: the night after the landingChoose the optionUnlock
    • Match the sentence halvesMatchUnlock
    • Write the story of an incident or a stressful work momentWriting, checked by the teacherUnlock
    • Record your incident storySpeaking, checked by the teacherUnlock

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Vocabulary

12 words and phrases from the lesson, each with a picture and audio in edio.

+9 more with pictures and audio in the lessonMore words

  • mission control
  • a timeline
  • a safeguard
  • spare capacity
  • a go-ahead
  • abort
  • recover
  • carry on
  • pile up

Grammar: narrative tenses for incident stories

Narrative tenses are the past tenses a story needs: the past simple moves it on, the past continuous sets the scene and the past perfect jumps back. Telling the 1202 alarm and a flash-sale incident, learners give each tense its own job in a timeline and link the events with by then, as soon as and meanwhile.

Narrative tenses: tell an incident in clear order

The past simple moves the story on, the past continuous sets the scene, and the past perfect jumps back to something earlier.

Three tenses, three jobs

The past simple gives the main events in order: The alarm appeared, and Bales said “go”. The past continuous sets the background: were flying. The past perfect jumps back to an earlier moment: The team had gone through every alarm code before the flight.

Three tenses, three jobs

TenseFormJob in the storyExample
Past simpleworked / went (didn't work)the main events, in orderThe alarm appeared, and Bales said “go”.
Past continuouswas / were + -ingthe background: in progress when something happenedDiego was watching the queue graph when…
Past perfecthad + past participle (hadn't + past participle)a jump back: earlier than the moment you are tellingThe team had gone through every alarm code before the flight.

The 1202 alarm on a timeline

pastnow
  • months before: the team had gone through the codes
  • Armstrong and Aldrin were flying down
  • the alarm appeared
  • half a minute later: Bales said “go”

One sentence, three tenses

One sentence can hold all three: Diego was watching the graph when he noticed that the job had stopped. Background, then event, then the jump back: the continuous for what was going on, the simple for the moment and the perfect for what came first.

background: was / were + -ingevent: past simpleearlier: had + past participle

Diego was watching the graph when he noticed that the job had stopped.

Payments were coming in fast when the scheduler paused a job that the team had marked as low priority.

Timeline words

Timeline words tie the events together. By then and by the time often take the past perfect: By the time Diego noticed, support had received four tickets. While takes a longer action, when a short one; meanwhile moves the story to another place.

PhraseMeaningExample
by thenbefore that point in the story; often + past perfectBy then, support had received four tickets.
by the time+ past simple; the earlier action takes the past perfectBy the time Diego noticed, support had received four tickets.
at that pointat that moment in the storyAt that point, Bales gave the go-ahead.
as soon asright afterAs soon as Diego saw the job, he added workers.
onceafter something was finished or trueOnce the cause was clear, the crew changed the setting.
shortly aftera little laterThe queue recovered. Shortly after, the charts caught up.
meanwhileat the same time, in another placeMeanwhile, in Houston, Bales had to decide.
while / whenwhile + a longer action; when + a short eventWhile Diego was watching the graph, a ticket came in.

Don't put every verb in the past perfect

Use the past perfect only to jump back. Events told in the order they happened need only the past simple: The alarm appeared, Bales checked the list and said “go”. Every verb in the past perfect blurs the timeline, and had went is never right: it's had gone.

Don't put every verb in the past perfect

Use the past perfect only when you jump back to something earlier. When you tell events in the order they happened, the past simple is enough: The alarm appeared, Bales checked the list and said “go”.

Typical mistakes

  • When the alarm was appearing, they decided to go on.

    When the alarm appeared, they decided to go on.

    A short event takes the past simple, not the continuous.

  • The crew had went through the checklist.

    The crew had gone through the checklist.

    had + past participle: go → gone, not went.

  • The alarm had appeared, Bales had checked the list and had said “go”.

    The alarm appeared, Bales checked the list and said “go”.

    Events told in order take the past simple.

  • While the alarm appeared, Armstrong and Aldrin were flying down.

    Armstrong and Aldrin were flying down when the alarm appeared.

    while + a longer action; when + a short event.

From today's stories

  • Armstrong and Aldrin were flying Eagle down to the Moon when the computer showed an alarm.
  • The crew hadn't made a mistake: their checklist had told them to set the radar that way.
  • Bales gave the go-ahead about half a minute after the first alarm.
  • At 2:24 p.m., I was watching the queue graph when I noticed that the job had stopped.
  • By then, support had already received four tickets.
  • As soon as I saw the paused job, I added two more workers.

More lessons on this grammar: Past perfect lessons and exercises

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What's in the lesson

  • 13 auto-checked exercises
  • 2 games
  • 2 teacher-checked tasks
  • 1 real-life document
  • 2 articles
  • 1 grammar scheme
  • 1 set of word cards
  • 1 audio clip
  • 1 picture
  • 1 transcript

The main objectives of this lesson are to:

  • use the past continuous for the scene and the past simple for each event: Diego was watching the graph when he noticed…
  • jump back to something earlier with the past perfect: By then, support had received four tickets.
  • order events with timeline words: by then, by the time, as soon as, once, shortly after, meanwhile
  • tell a colleague what happened during an incident, step by step and with no blame, ending with what changed

Lesson 7 starts unit 3 of English for IT B2 · Beyond the Code, Incidents and postmortems, whose goal is a blame-free incident story in the right order, plus agreement on what to change. It draws on the past simple and past continuous with when and while from A2, and on the past perfect from lesson 23 of English for IT B1. Lesson 8 adds the passive for blameless postmortems, and lesson 9 the third conditional.

Boxes of questions about alarms at work open the lesson, followed by twelve illustrated words with audio, from overload to pile up, and a picture quiz. The story tells how the computer flashed alarms 1202 and 1201 during the landing, dropped its less important jobs and carried on, and why Houston said go. At work, an engineer's notes for a postmortem reading club set that timeline beside a small flash-sale incident, with a true-or-false check and events to order. In an AI-voiced talk, two colleagues then ask why the controllers didn't abort.

After the scheme, five self-checking drills move from choosing the right tense in the Apollo story to joining two sentences with the past perfect and filling in a postmortem timeline. In the chat, students tell a colleague back from vacation what happened during the flash sale; a wheel then asks for stories of their own and questions to discuss. Homework adds a phrase bank and two self-checking drills, then an incident story to write and record, which the teacher reviews.

Grammar:
narrative tenses · past perfect · timeline linkers
Topic:
incidents · postmortems · Apollo 11

Teaching tips

  • Draw the 1202 timeline on the board before the scheme: a long bar for were flying down, a dot for the alarm appeared and an earlier dot for had gone through the codes. Students describe each mark.
  • Play the reading-club talk twice: first for why Houston didn't abort, then for every past perfect students hear, such as had prepared and had aborted.
  • In company groups, swap Apollo for a real incident: one learner tells a recent outage or a deadline scramble in three tenses, while the others listen for each timeline word and ask one follow-up question.
  • One-to-one, use the wheel's role-play as a handover: the learner tells you yesterday's problem as if you'd missed it, sets the scene, jumps back once with By then, … had … and ends with what changed.

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The whole course: English for IT B2 · Beyond the Code

24 lessons at B2 for software teams, in American English. A year on at Kestrel Cloud, a fictional payments startup, Iryna and her team estimate work, write docs and postmortems, argue trade-offs, give demos and negotiate scope. Each lesson starts from a real case, from the Apollo 11 alarms to Conway's law.See the course

  1. Unit 1 Planning and estimates

    estimates and deadlines: approximating numbers, the future continuous and perfect, likelihood

    1. Lesson 1It always takes longerApproximating numbers in estimates
    2. Lesson 2By New Year's Eve, we'll have fixed itFuture continuous and future perfect
    3. Lesson 3Let's play planning pokerLikelihood with bound to, likely to and may well

  2. Unit 2 Docs people read

    specs and design docs: modals for requirements, participle clauses, plain English

    1. Lesson 4MUST, SHOULD or MAY?Modal verbs for requirements in specs
    2. Lesson 5Four kinds of docsParticiple clauses in documentation
    3. Lesson 6Just a request for commentsPlain English for design docs

  3. Unit 3 Incidents and postmortems

    telling an incident without blame: narrative tenses, the passive, the third conditional

    1. Lesson 7 · you're hereThe 1202 alarmNarrative tenses for incident stories
    2. Lesson 8Blameless by designActive vs passive voice in a postmortem
    3. Lesson 9If we had had an alert…The third conditional: a different past

  4. Unit 4 Architecture and trade-offs

    comparing options and recording decisions: contrast linkers, modals of deduction, mixed conditionals

    1. Lesson 10Your system copies your org chartContrast linkers for comparing options
    2. Lesson 11It's always DNSModals of deduction for troubleshooting
    3. Lesson 12Write down the whyMixed conditionals for looking back on decisions

  5. Unit 5 Demos and tech talks

    a clear structure on stage: signposting, cleft sentences, describing trends

    1. Lesson 13The mother of all demosSignposting language for demos
    2. Lesson 1420 slides, 15 secondsCleft sentences for emphasis
    3. Lesson 15Numbers that tell a storyDescribing graphs and trends

  6. Unit 6 Stakeholders and scope

    saying no and finding yes: diplomatic language, as long as and unless, negotiating

    1. Lesson 16Pay down the debtDiplomatic language for hard messages
    2. Lesson 17Why meetings argue about the bike shedAs long as, provided, unless and otherwise
    3. Lesson 18Yes, if…Negotiating language for scope and deadlines

  7. Unit 7 AI, security and ethics

    AI tools, passwords and team rules: be used to and get used to, past modals of deduction, purpose linkers

    1. Lesson 19Your new pair programmerUsed to, be used to and get used to
    2. Lesson 20Change your password? Maybe notPast modals of deduction
    3. Lesson 21Rules for AI at workPurpose linkers for rules with a reason

  8. Unit 8 Growing your career

    feedback, retros and goals: phrasal verbs, reporting verbs, wish and if only

    1. Lesson 22Your next levelCareer phrasal verbs and goal frames
    2. Lesson 23Feedback that helpsReporting verbs and their patterns
    3. Lesson 24Start, stop, continueWish and if only for wishes and regrets

Questions about this lesson

What are narrative tenses?
Narrative tenses are the past tenses you use to tell a story: the past simple for the main events (The alarm appeared.), the past continuous for the background (Payments were coming in fast.) and the past perfect for something earlier (The team had gone through every alarm code.). The B2 English for IT lesson The 1202 alarm on edio.ai practices all three in incident stories.
What are the past tenses in English?
English has four past tenses: simple, continuous, perfect and perfect continuous. The queue recovered is the past simple, Payments were coming in fast the past continuous, Support had received four tickets the past perfect, and had been waiting the past perfect continuous. Stories lean on the first three: one moves the events on, one sets the scene and one jumps back.
When do you use the past perfect in a story?
Use the past perfect to jump back to something that happened earlier than the moment you're telling: By then, support had received four tickets. A few months earlier, controllers had aborted a practice landing. Events told in order need only the past simple, so don't put every verb in the past perfect: The alarm appeared, Bales checked the list and said “go”.
Is it "when the alarm appeared" or "when the alarm was appearing"?
It's when the alarm appeared, with the past simple, because a short event takes the simple form. The past continuous is for the longer action already in progress: Armstrong and Aldrin were flying down when the alarm appeared. The same logic decides between when and while: while goes with the longer action (While Diego was watching the graph, a ticket came in), when with the short event.
Is it "had went" or "had gone"?
It's had gone, because the past perfect needs the past participle: The crew had gone through the checklist. Went is the past simple, so had went is always wrong. Check other irregular verbs the same way: had seen, not had saw; had written, not had wrote. In the chat of The 1202 alarm, a B2 lesson on edio.ai, As soon as I had went… is one of the wrong replies.
What's the difference between "by then" and "by the time"?
By then refers back to a moment already mentioned, while by the time names that moment in a clause of its own. Both often come with the past perfect for the earlier action: By then, support had received four tickets. By the time Diego noticed, support had received four tickets. The clause after by the time takes the past simple: Diego noticed, not had noticed.
What does it mean to give the go-ahead?
To give the go-ahead is to give permission to start or carry on: Mission Control gave the go-ahead about 30 seconds later. Its opposite in an incident is to abort, to stop early because going on seems unsafe. Teams use both words in launch and incident calls. The B2 lesson The 1202 alarm on edio.ai teaches them with the Apollo 11 landing, where Houston had seconds to choose.
How do you tell the story of an incident in English?
Set the scene, tell events in order, jump back once: It was a Friday afternoon, and I was on call. I was watching the queue graph when I noticed that a job had stopped. By then, support had received four tickets. Link the steps with as soon as, once and shortly after, and end without blame: What we changed: a new alert.
How do I teach narrative tenses to B2 adults?
Draw the story on a timeline before naming any tense: a bar for what was going on, dots for the events and an earlier dot for what had already happened. Then let learners tell a real work story with the same three marks. In The 1202 alarm, a B2 English for IT lesson on edio.ai, the scheme draws the Apollo 11 landing this way, and a drill asks what happened first.
What's a good speaking activity for narrative tenses?
Try a handover story for a colleague who missed the problem: set the scene, give the main events in order, jump back once with By then, … had … and end with what changed. A wheel of prompts adds variety, from a plan that changed at the last minute to a quick decision at work. This lesson's wheel also asks whether preparation or luck mattered more in the Apollo story.
What's good homework for practicing narrative tenses?
A short incident story from the learner's own work makes good homework: a scene in the past continuous, events in the past simple with at least three timeline words, and a jump back with By then, … had …. In The 1202 alarm on edio.ai, a B2 English for IT lesson, two drills check themselves before students write that story and record it for the teacher to review.
Are there interactive narrative tenses exercises?
Yes: story gap-fills and chats that check each choice make good narrative tenses exercises. This page plays four parts of The 1202 alarm, a B2 lesson on edio.ai, without an account: a reading-club talk about why Houston said go, a drill that mixes were flying, said and had stopped, a chat in which students tell a colleague about a flash-sale incident, and the homework's phrase bank. The other exercises are locked.
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