a toy
I/You/We/They have a toy.
He/She/It has a toy.
a cake
I/You/We/They have a cake.
He/She/It has a cake.
an egg
I/You/We/They have an egg.
He/She/It has an egg.
a child
I/You/We/They have a child.
He/She/It has a child.
a fruit
I/You/We/They have a fruit.
He/She/It has a fruit.
Объяснение о 'have/has':Have используется из I, you, we, they
Has используется из He, she, it
Утвердительное предложение:
I, you, we, they/He, she, it + have/has + 
Отрицательное предложение:
I, you, we, they/He, she, it + don't/doesn't + have +
*Заметьте - неправильно сказать "he doesn't has", например. Здесь на лицо "he" указывает вс глагол "doesn't". Также вы не можете сказать "I have not", только "I have not got" (но тут уже конструкция 'have got')
Вопросительное предложение:
Do/Does + I, you, we, they/He, she, it + have + ?
В отрицательном и вопросительном предложении, если глагол "have", добавляется вс глагол do/does.
You have a toy
He has a toy
She has a toy
It has a toy
We have a toy
They have a toy
2) I have a cake
You have a cake
He has a cake
She has a cake
It has a cake
We have a cake
They have a cake
3) I have an egg
You have an egg
He has an egg
She has an egg
It has an egg
We have an egg
They have an egg.
4)I have a child
You have a child
He has a child
She has a child
It has a child
We have a child
They have a child
5) I have fruit
You have fruit
He has fruit
She has fruit
It has fruit
We have fruit
They have fruit