She is fixing the printer.
The continuous form is natural because fixing is an action happening now.
Satzbausteine
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Decide when verbs describe states or actions so continuous and perfect forms sound natural.
Meaning first: what is the verb doing here?
[verb in this sentence]
│
┌──────────────┴──────────────┐
▼ ▼
PHOTO = STATE VIDEO = ACTION
true / exists / feels doing / happening
not an activity activity in progress
│ │
simple form be + -ing = in progress
She owns the printer. She is fixing the printer.
Past → now state Past → now action
have + state have been + -ing
I’ve known Sam for years. I’ve been waiting for Sam for an hour.
Same word? Choose the meaning again:
The room smells clean. → PHOTO
The dog is smelling my bag. → VIDEO
Ask: is this verb a photo (state) or a video (action)? Use continuous forms for the video meaning.
She is fixing the printer.
The continuous form is natural because fixing is an action happening now.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
She owns the printer.
Own describes a state, so the simple form is natural.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I need a break.
Need is normally stative, so it uses the simple present.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Do you believe him?
Believe is a mental-state verb, so the simple question form is normal.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
She doesn’t like coffee.
Like describes a preference, so the simple present is natural.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Right now, I’m taking a break.
Take a break is an activity here, so the continuous form is natural.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
The room smells clean.
Smells describes a perceived state of the room.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
The dog is smelling my bag.
Here smell is an action: the dog is actively using its nose.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I’ve known Sam for years.
Know is a state verb, so present perfect simple is the natural perfect form.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
We’ve owned this flat since 2018.
Own is a state verb, so present perfect simple is preferred for duration.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I’ve been waiting for Sam for an hour.
Waiting is an activity, so present perfect continuous is natural.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
They’ve been repairing the flat since May.
Repairing is an action over time, so the continuous perfect form sounds natural.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I think you’re right.
Think is stative when it means believe or have an opinion.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I’m thinking about changing jobs.
The continuous is natural because think means consider here.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
He has a small office.
Have is stative when it means possess.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
He’s having a meeting.
Have can be continuous when it means experience or take part in an activity.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I’m knowing the answer.
Know is a state verb here, so the continuous form is normally wrong.
I know the answer.
Use simple present for the state verb know.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Are you understanding me?
Understand is a mental-state verb here, so the continuous question sounds unnatural in neutral English.
Do you understand me?
Use the simple present question for understand when asking about comprehension.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
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