Present Perfect
I / work
I have worked
(Send) emails is practical.
Sending emails is practical.
She (study).
She is going to study.
I like (watch tv).
I like to watch tv / I like watching tv.
A small body of standing water often found in hotels and homes.
Pool
You / see
You have seen
(Drive) fast is dangerous.
Driving fast is dangerous.
I (work).
I am going to work.
I love (cook).
I love to cook / I love cooking.
A piece of land completely surrounded by water, and not large enough to be called a continent.
Island
They / have
They have had
(Play) the piano is difficult.
Playing the piano is difficult.
You (cook).
You are going to cook.
I want (visit) Denmark.
I want to visit Denmark.
The place to which a person or thing travels.
Destination
She / be
She has been
(Walk) at the park is relaxing.
Walking at the park is relaxing.
He (play golf).
He is going to play golf.
I enjoy (walk) at the park.
I enjoy walking at the park.
The act or sport of riding or traveling by bicycle.
Cycling
We / go
We have gone
(Have) fun is important.
Having fun is important.
They (not / read).
They aren't going to read.
I can't stand (be) here.
I can't stand being here.
To travel regularly over some distance, as from home to work and back.
Commuting