Base form

Simple past

Past participle

I am ready.

I was ready.

I have been ready.

Base form

Simple past

Past participle

The class begins at 9.

The class began at 9.

The class has begun.

Base form

Simple past

Past participle

I do my homework.

I did my homework.

I have done my homework.

Base form

Simple past

Past participle

He drinks water.

He drank water.

He has drunk water.

Base form

Simple past

Past participle

She goes home.

She went home.

She has gone home.

Base form

Simple past

Past participle

The hen lies eggs.

The hen laid eggs.

The hen has laid eggs.

Base form

Simple past

Past participle

The phone rings.

The phone rang.

The phone has rung.

Base form

Simple past

Past participle

I see the bus.

I saw the bus.

I have seen the bus.

Base form

Simple past

Past participle

I show you the way.

I showed you the way.

I have shown you the way.

Base form

Simple past

Past participle

She sings well.

She sang well.

She has sung well.

Base form

Simple past

Past participle

The ship sinks.

The ship sank.

The ship has sunk.

Base form

Simple past

Past participle

He swims every day.

He swam yesterday.

He has swum before.