Sentence Detectives Worksheet
Grammar Investigation Lab
Name:
Date:
SENTENCE DETECTIVES
Uncover the Subject and Predicate in Every Sentence
Case File #302
S
The Subject (Who or What)
The naming part. It tells who or what the sentence is about.
Ex: The brown dog barked loudly.
P
The Predicate (Action / Doing)
The telling part. It tells what the subject does, did, or is.
Ex: The brown dog barked loudly.
PART 1
Case Investigation
Circle the Subject • Underline the Predicate
Detective Example: The red car drove down the street.
The fluffy white cat took a long nap on the warm rug.
A tiny green frog hopped into the clear pond.
Three singing birds made a nest in the tall oak tree.
My little brother baked sweet honey cookies with Mom.
The big yellow bus stopped at the street corner.
PART 2
Divide the Clues
Draw a vertical line ( | ) between the Subject and Predicate
Detective Example: The brave firefighter | climbed up the tall ladder.
The cool rain tapped gently on the bedroom window.
A friendly police officer helped the lost puppy.
The shiny silver spaceship zoomed past the bright stars.
All the happy children clapped after the funny puppet show.
PART 3
Missing Clue Builder
Write the missing part to complete each sentence
- Add a PREDICATE (What did they do?):
The hungry brown bear .
- Add a SUBJECT (Who or what was it?):
splashed in the muddy puddle after school.
Detective Inspection Check:
Capital letter start Ending punctuation Subject & predicate in each
