have vs Have you eaten lunch

Some examples from the web:

• They have speed, they have music, they have curves, they have comfort, they have security, they have safety - they have something for everyone.
• Herbalife distributors have intimidated, have threatened our people.
• Business organisations have got smaller, methods of communication have changed.
• Please have sodium, please have sodium, please have sodium.
• Most women don't have what you have.
• We have found our process helps volunteers have fulfilling volunteer experiences.
• If you have come into contact with Private Coleman and have any symptoms of infection, we have an antiviral vaccine.
• I have met people during the six years that we have worked on this subject who have suffered needle-stick injuries, and I would really emphasise that trauma.
• Any shareholdings I have ever had have always been declared in the declaration of interests, and they have never stopped me from criticising some wind-power projects.
• We have seen often enough in the past that mining regions which have become uncompetitive have suffered a severe social and economic decline within a short period of time.
• Unfortunately I have not the same complained directly what I should have done, but probably would have used nothing.
• All these people have incredible families, but I have a great brother.
• Other people have a choice, you have a destiny.
• You have words, I have weapons.
• There have always been people that have had to.
• She would have preferred to have heard from you before that.
• That is why I have always failed where others have succeeded.
• As man's intellect and technology have evolved so too have the games he plays.
• We have a different relationship than most mothers have with their daughters.
• They don't have the volumes of technical literature that we have.

Some examples from the web:

• Dad, you haven't eaten lunch yet right?
• You haven't eaten your lunch.
• Tom had already eaten lunch when Mary arrived.
• Sir-ji, in 15 years, you've never eaten lunch at home.
• Make Natalie lunch like someone who has ever eaten lunch.
• Where's Mai? l haven't even eaten lunch.
• I've forgotten I've eaten lunch on a number of occasions, So I had to eat again just in case,
• The seagulls were eaten my lunch.
• I will go with you after I have eaten my lunch.
• Look, it was late. I hadn't eaten since lunch.
• I've eaten the same lunch for 58 years.
• Thomas would have eaten that kid's lunch.
• Have you really not eaten lunch?
• How many of these have you eaten?
• Have you eaten anything since they took you?
• Okay, what have you eaten today?
• Have you eaten dinner with isdronningen?
• Have you eaten a Host, neighbor?
• Have you eaten, my dear Guinevere?
• "Have you eaten?" No, let me go or anything close.