I work from home.
The main verb carries the sentence meaning without an auxiliary.
Satzbausteine
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Recognize main verbs, auxiliaries, and the base, -s, -ing, past, and past participle forms.
THE VERB-SHAPE RULE
No helper:
person/thing + MAIN VERB carries the grammar
She works from home.
└─ main verb gets -s
With a helper (auxiliary = helping verb):
person/thing + HELPER + main verb shape
│
├─ be → -ing
│ They are working today.
│
├─ have → past participle
│ We have worked together before.
│
└─ do / does / did / modal → base verb
Does he drive?
He can drive.
Do not mark twice:
She doesn't likes coffee. ✗
She doesn't like coffee. ✓
When a helper is present, put the grammar on the helper and use the form it asks for on the main verb.
I work from home.
The main verb carries the sentence meaning without an auxiliary.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
They are working today.
Auxiliary be controls the -ing form.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
She works from home.
The -s form appears in the present simple after she, he, or it.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
We have worked together before.
Auxiliary have takes the past participle worked.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Maya cooks dinner.
With no visible auxiliary, the main verb carries the present-tense marking.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Maya is cooking dinner.
Auxiliary be takes the -ing form of the main verb.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Maya has cooked dinner.
Auxiliary have takes a past participle.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Maya did not cook dinner.
Did carries past time, so the main verb stays in the base form cook.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
He can drive.
After a modal auxiliary, use the base form of the main verb.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Does he drive?
Does carries the present-question grammar, so drive stays base.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
He is driving home.
Be + -ing forms a continuous verb phrase.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
He has driven home.
Driven is the past participle used after has.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
The car was driven carefully.
Be + past participle can make a passive verb phrase.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Do you do yoga?
The first do is an auxiliary; the second do is the main verb.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
Yes, I do.
In a short answer, do stands for the whole verb phrase.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
She doesn't likes coffee.
After doesn't, the main verb should not take -s.
She doesn't like coffee.
Doesn't carries the present negative grammar, so like stays base.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I saw that film last night.
Saw is the simple past form and can stand as the main verb.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
I have seen that film before.
Seen is the past participle and normally needs an auxiliary such as have.
Lies den Satz in Sinneinheiten, nicht Wort für Wort.
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