| 1. Conjugation |
| Affirmative |
Negative |
Interrogative |
I have worked
You have worked
He has worked
She has worked
It has worked
We have worked
You have worked
They have worked |
I have not worked
You have not worked
He has not worked
She has not worked
It has not worked
We have not worked
You have not worked
They have not worked |
Have I worked?
Have you worked?
Has he worked?
Has she worked?
Has it worked?
Have we worked?
Have you worked?
Have they worked? |
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Contracted forms: have = 've have not = haven't
has = 's has not = hasn't
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| 2. Spelling |
General rule: infinitive without 'to' + ED
to work --> I have worked
Verbs ending in E or IE: infinitive without 'to' + D
to die --> He has died
Verbs ending in Y, preceded by a consonant: the Y changes into IED
to try --> She has tried
Verbs ending in L, preceded by a short vowel: the L is doubled + ED
to travel --> We have travelled
Verbs ending in IC: the C is followed by K + ED
to panic --> They have panicked
Verbs of one syllable, ending in a single consonant, preceded by a short vowel:
the end consonant is doubled + ED
to plan --> You have planned |