Hello,

Can you help me. I don´t know whether the senteces below (bold) are correct or not. I tried to put the senteces in context. I hope it is clear.

My family has recently bought a dog.

My father is not home for a few days and he calls me and asks whether the dog gets his food.

My answer is:

-I don´t know. Natalia (my sister) is supposed to feed the dog.

______________________________________________________________________________

It is few hours after dog´s feeding time. My father calls me and asks whether the dog has got the food.

My answer is:

-I don´t know. Natalia was supposed to feed the dog.

______________________________________________________________________________

The day after my father calls me and asks me whether the dog got the food the other day.

My answer is:

-I don´t know. Natalia was supposed to have fed the dog.

_______________________________________________________________________________

There is one more sentece I would like to know its usage:

Natalia is supposed to have fed the dog. I don´t know how to write the situation to this sentece. It seems to me it is similar to Natalia was supposed to feed the dog. but I am not sure.

Thank you

M
My father is not home for a few days and he calls me and asks whether the dog gets his food.

-I don´t know. Natalia (my sister) is supposed to feed the dog.

It is a few hours after the dog´s feeding time. My father calls me and asks whether the dog has got the food.

-I don´t know. Natalia was supposed to have fed the dog.

The day after my father calls me and asks me whether the dog got the food the other day.

-I don´t know. Natalia was supposed to have fed the dog.

There is one more sentece I would like to know its usage:

Natalia is supposed to have fed the dog. I don´t know how to write the situation to this sentece.-- The situation is the past.

Natalia was supposed to feed the dog. - The situation is 'any time' (past. present, future)
thank you for your quick response

Natalia is supposed to have fed the dog. I don´t know how to write the situation to this sentece.-- The situation is

the past. It means that meaning is the same as Natalia was supposed to have fed the dog. ? There is no difference?

_________________________________________________________________________________________________

Natalia was supposed to feed the dog. - The situation is 'any time' (past. present, future) Could you write me the context to this sentecne?

Thank you

M
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I'm sorry. I now see that I misled you, because I misread the 2nd sentence: I thought it read 'is', not 'was'! So let's start again, please:

My family has recently bought a dog. My father is not home for a few days and he calls me and asks whether the dog gets his food.

My answer is: I don´t know. Natalia (my sister) is supposed to feed the dog. -- OK. The question is general '...gets..?', so the answer is general: she is supposed to feed the dog any time – past, present or future.

It is few hours after the dog´s feeding time. My father calls me and asks whether the dog has got the food.

My answer is: I don´t know. Natalia was supposed to feed the dog. -- OK, or 'Natalia was supposed to have fed the dog.' Both of these forms refer to a past responsibility, answering the past question '...has got..?'

The day after my father calls me and asks me whether the dog got the food the other day.

My answer is: I don´t know. Natalia was supposed to have fed the dog.-- OK, or 'Natalia was supposed to feed the dog.' Both of these forms refer to a past responsibility, answering the past question '...got (did get)..?'

Natalia is supposed to have fed the dog. I don´t know how to write the situation to this sentence. It seems to me it is similar to Natalia was supposed to feed the dog. but I am not sure -- Yes, I agree that they are just two different verb structures for saying the stating the same thing: a past reponsibility.

Now, do you have a question about my new answer?
Hi,

Thank you for your answer.

I have got one more question. Natalia was supposed to feed the dog. Natalia was supposed to have fed the dog.

Could you tell me the difference or I can use it interchangeably. I think there should be a situation where I should use either the first one or the second one.

Thank you
This is how I vaguely see them:

Natalia was supposed to feed the dog. -- In the past, she had this responsibility

Natalia was supposed to have fed the dog. -- I the past, she had this responsibility for an earlier occasion in particular.
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