For more on the Daily Mail: How humans bred some dogs to be unrecognizable from their ancestors
CONSTRUCTION OF THE PRESENT PERFECT
Subject + auxiliary have/has + past participle
The past participle is the -ed form of the verb.
Humans have changed man's best friend.
In the case of an irregular verb, pick it up in the 3rd column. Irregular verbs have their own forms.
The ambassador has eaten all the Ferrero Rocher chocolates.
- Interrogative form:
As you remember, when you want to ask a question, you need an auxiliary. Make it simple, use have or has.
Have you seen Celine’s incredible show in Vegas?
- Negative form:
Scooby-Doo and Shaggy have not arrived yet and we all wonder where they are.
*Next to come in English for grown ups, when to use the present perfect in three parts.