You’re tapping through a friend's Instagram story. It’s a 15-second video of them trying to build a ridiculously tall tower of Jenga blocks. You watch the whole thing. You see them place the final block, you see the tower wobble for a second, and you see it all come crashing down.
You didn't just catch a glimpse. You witnessed the entire, short-lived drama from start to finish.
In English, there’s a simple "camera setting" to describe this. And it’s not the one most people learn first.
Textbooks say when you see or hear someone doing something, you should use the -ing form. I saw him running[TRANS]. I heard her singing[TRANS]. This is true, but it’s only half the story. It’s like walking into a movie halfway through.
When you witness the entire action—from the absolute beginning to the absolute end—you drop the -ing and use the raw, base form of the verb.
It’s a signal that you are a complete witness. You have the whole file.
There are exactly 5 primary verbs of perception that use this rule: see, watch, hear, feel, and notice. Master these five, and you've mastered the core of this "witness" mode.
I saw the delivery guy drop the package.
We heard the car explode.
I felt the bee sting me.
Did you notice him leave the party?
The Unedited Footage
Think of the raw verb form as the "unedited footage" setting in your brain's camera. When you use it, you're telling your listener that you have the full recording of a finished event. It’s a statement of authority. You're not speculating or describing a blurry, ongoing action. You're presenting a crisp, complete, packaged piece of information.
This is why it’s so common in police reports or when recounting a dramatic, short event. The witness saw the suspect enter the bank[TRANS]. The action is presented as a whole, sealed unit of truth. It started, it happened, it finished. You saw it all.
The Golden Rule is this: If you saw the whole movie, no matter how short, use the raw verb. If you only walked in for one scene, use -ing. This isn't just grammar; it's about defining your role as an observer—are you a casual passerby, or are you the one who saw the whole story?
View Comprehensive Vocabulary List
I saw him fall.
I saw him fall.
She watched the kids play in the yard.
She watched the kids play in the yard.
We heard a plate smash in the kitchen.
We heard a plate smash in the kitchen.
I felt the ground shake.
I felt the ground shake.
I didn't notice you come in.
I didn't notice you come in.
The scientist observed the rat press the lever.
The scientist observed the rat press the lever.
I overheard my boss say my name.
I overheard my boss say my name.