🌀 Master Irregular Verbs
2nd Year BAC Sciences de la Vie et la Terre SVT
📌 Introduction
Irregular verbs don’t follow the standard -ed pattern for past forms. Mastering them is crucial for lab reports and scientific writing.
Key Features
- Unique past forms
- No -ed ending
- 3 forms (V1, V2, V3)
- Common in scientific English
Science Examples
“The results showed (show)…”
“The compound became (become)…”
Did You Know? “The 20 most common irregular verbs make up 45% of all verb usage in scientific papers.”
🔍 Key Irregular Verb Groups
| Base Form | Past Simple | Past Participle | Science Example |
|---|---|---|---|
| write | wrote | written | “We wrote the report” |
| find | found | found | “They found evidence” |
| break | broke | broken | “The glass broke” |
| draw | drew | drawn | “She drew the diagram” |
🎯 Exercise: Verb Form Matching
Match each base form to its past simple and past participle:
1. take
2. give
3. see
🔄 Common Irregular Patterns
Vowel Change
begin → began → begun
drink → drank → drunk
No Change
cut → cut → cut
put → put → put
Complete Change
go → went → gone
be → was/were → been
🔤 Exercise: Pattern Recognition
Group these verbs by their pattern:
Vowel Change
No Change
🧪 Science Context Practice
Common Scientific Usage
- “The experiment began at 9:00 AM.”
- “The results showed significant changes.”
- “We found unexpected results.”
- “The solution became cloudy.”
✍️ Exercise: Lab Report Gap Fill
Complete these lab sentences with correct verb forms:
1. “The data ____ (show) a clear pattern.”
2. “We had ____ (write) the conclusion before the deadline.”
3. “The temperature ____ (rise) rapidly during the reaction.”
📝 Past Participles in Science
Common Structures
Present Perfect:
“We have written the report.”
Passive Voice:
“The samples were taken at noon.”
🔍 Exercise: Participle Identification
Identify the correct past participle forms:
1. “The results have been ____ (record).”
2. “The substance was ____ (find) to be toxic.”
✏️ Comprehensive Test
🎯 Final Challenge
Edit this lab abstract with correct irregular verb forms:
“We begin the experiment at 9 AM. The solution become cloudy after heating. The data show significant changes. We had wrote the report yesterday.”
