Chief Briefing Teacher Guide Chief's Briefing
Lesson Plan: Mixed Irregular Verbs
Priority Level Top Secret
Mission Objectives
Identify "mixed" irregular verbs (regular past, irregular participle).
Apply the past perfect tense (had + participle) in narrative writing.
Differentiate between simple past and past perfect using the "-en" ending.
Pacing & Sequence
05 MIN
Warm-Up: The Flashback
Students compare one-time actions (yesterday) with repeated/completed actions (have done).
10 MIN
Surveillance: Video Analysis
Watch the Khan Academy video. Focus on the segment 1:05-1:23 (Show/Showed/Shown). Use the discussion anchors provided.
20 MIN
Main Activity: Detective's Report
Writing activity using at least 5 irregular verbs in past perfect tense.
05 MIN
Closure: Evidence Review
Partner swap and peer editing focusing on helper verbs and participles.
Interrogation Tips (Discussion)
Timestamp 1:05 (The 'Show' Example):
"Why do you think 'showed' feels regular but 'shown' feels irregular? Which sounds better: 'I have showed him' or 'I have shown him'?"
Timestamp 2:20 (Common Words):
"The most common words like 'be' and 'go' are the weirdest. Why might we keep those old, irregular forms instead of making them regular?"
Internal Memo: Grammar Watch
Students often struggle with the "Mixed" category because their brain defaults to the "-ed" pattern. Emphasize that the participle (the "-en" form) is the "long-distance" form used with helper verbs like has, have, or had .
Case Solved: Answer Key
Verb Form Reference
Present Past Participle Show Showed Shown Prove Proved Proven Bite Bit Bitten Ride Rode Ridden Eat Ate Eaten Speak Spoke Spoken Go Went Gone
Example Sentences
Correct: "The thief had taken the jewels."
Incorrect: "The thief had took the jewels."
Correct: "By the time I arrived, the cake had been eaten."
Extension: Passive Voice
Point out that the passive voice always uses the participle form.
"The cookie was eaten by Stu."proven by the detective."
Common Misconceptions
The "I seen it" Trap: Students often use the participle ("seen", "done", "gone") as the simple past tense without a helper verb. Remind them: Participles are social; they need a helper friend (have/has/had).
The "-ed" Overgeneralization: Some might write "eated" or "showen". Reinforce the sound patterns introduced in the video.
Clues and Conjugations Slides Clues & Conjugations
The Case of the Mixed Irregular Verbs
The Flashback
Checking your memory...
1 Simple Past
Describe one thing you did yesterday .
"I walked the dog."
2 Past Perfect
Describe one thing you have done many times before.
"I have eaten pizza many times."
Surveillance Footage
Embedded media
WATCH 1:05 - 1:23
Pay close attention to how the "middle step" looks regular, but the "end step" is irregular.
The "Mixed" Pattern
Present Past (Regular) Participle (The -EN) Show Showed Shown Prove Proved Proven Wait! Some vowel-shifters also use the -en ending: Bite → Bit → Bitten Ride → Rode → Ridden
Bonus Clue: Passive Voice
"The cookie was eaten by Stu."
When the action happens to the object,ALWAYS use the past participle.
Mission Briefing
Write a Detective's Report about a missing object.5 irregular participles from our case file in the past perfect tense.
Write 5+ Sentences
Use "Had" + Participle
Detective Report Worksheet Detective's Report
Bureau of Grammar Investigation // Case #505
AGENT NAME: ____________________________
DATE: ___________________________________
01: The Flashback
Yesterday (Simple Past):
Before (Past Perfect):
02: Evidence Log
Fill in the missing forms as we watch the surveillance footage.
Present Simple Past Past Participle (Helper + -EN) Show Showed ____________________ Prove Proved ____________________ Bite Bit ____________________ Ride Rode ____________________ Eat Ate ____________________ Speak Spoke ____________________ Go Went ____________________
03: Case Report
MISSING OBJECT: _________________________
Explain what happened before you arrived on the scene. Use at least 5 participles with "had."
5+ SENTENCES
5+ IRREGULAR PARTICIPLES
CIRCLE ALL HELPERS ("HAD")
Witness Statements Scenarios Witness Statements
Role-Play Scenario Cards
The Witness
#01
Scenario:
You saw someone sneaking out of the jewelry store. You want to tell the detective what they did before you could stop them.
Required Verb:
GO → WENT → GONE
"The suspect had already gone before I called 911!"
The Butler
#02
Scenario:
You discovered the missing cake in the dining room. You need to prove that you didn't touch it.
Required Verb:
EAT → ATE → EATEN
"The dessert had been eaten by the time I entered!"
The Suspect
#03
Scenario:
The detective thinks you stole the bicycle. You have an alibi—you were riding your own bike miles away.
Required Verb:
RIDE → RODE → RIDDEN
"I had ridden my bike all the way to the park!"
The Lab Expert
#04
Scenario:
You analyzed the fingerprints on the safe. You are 100% sure whose they are.
Required Verb:
PROVE → PROVED → PROVEN
"The culprit's identity has been proven by the evidence!"
The Guard Dog
#05
Scenario (Woof!):
You tried to stop the thief, but they got away. You did leave a mark on their pants, though.
Required Verb:
BITE → BIT → BITTEN
"The intruder had been bitten before he climbed the fence!"
The Chief
#06
Scenario:
You are briefing the press about the case. You want to show them the map of the crime scene.
Required Verb:
SHOW → SHOWED → SHOWN
"The evidence has been shown to all the reporters."
Property of Grammar Bureau Detective Academy // Do Not Distribute
