I (never eat) caviar.
I HAVE NEVER EATEN caviar.
I (not to see) my friend since last summer.
I HAVEN'T SEEN my friend since last summer.
We (not to be) to Spain yet.
We HAVEN'T BEEN to Spain yet.
My friend and I (to see) an interesting film recently.
My friend and I HAVE SEEN an interesting film recently.
I (not to have) a holiday this year.
I HAVEN'T HAD a holiday this year.
My elder sister (just come) back.
My elder sister HAS JUST COME back.
My father (already read) these magazines.
My father HAS ALREADY READ these magazines.
The students (not to do) Exercise 5 yet.
The students HAVEN'T DONE Exercise 5 yet.
His brother (never do) such difficult exercises.
His brother HAS NEVER DONE such difficult exercises.
I (to call) Alice several times this week.
I HAVE CALLED Alice several times this week.
His grandfather (not to work) in the garden lately.
His grandfather HASN'T WORKED in the garden lately.
Linda (not to meet) him yet.
Linda HASN'T MET him yet.
Sarah (just make) a new dress for her doll.
Sarah HAS JUST MADE a new dress for her doll.
The postman (not to bring) the newspapers yet.
The postman HASN'T BROUGHT the newspapers yet.
They (to buy) a house in the country recently.
They HAVE BOUGHT a house in the country recently.
My little sister (not to drink) warm milk yet.
My little sister HASN'T DRUNK warm milk yet.
