Wh- words
Future tenses
Present/past tenses
Modal verbs
100

Wait to buy strawberries in June. They're much cheaper then.

Wait to buy strawberries in June, WHEN they are much cheaper.

100

Her plan is to study oceanography next year. GOING

She ....

She IS GOING TO study oceanography next year.

100

My teammate began resting 20 minutes ago. FOR

My teammate HAS BEEN RESTING for 20 minutes.

100

I'm certain that he is the owner of the venue. (must)

He must be the owner of the venue.

200

The fish made us ill. It hadn't been cooked properly.

The fish, WHICH hadn't been cooked properly, made us ill. 

200

The last guests will come at 9 pm. ARRIVED

By 9.05 pm, 

By 9.05 pm, all the guests will have arrived.

200

Billie sang "Bad Guy". Then, there was a loud explosion. (WHEN)

Billie WAS SINGING Bad Guy when THERE WAS a loud explosion. 

200

Blind people can’t follow this class. (able)

Blind people aren't able to follow this class.
300

This is the butcher's shop. I used to work there.

This is the butcher's shop WHERE I used to work.

300

We're going to watch the documentary from 1 to 3 o'clock. 

At 2.30, ....

At 2.30, we WILL BE WATCHING the documentary.

300

That was the second time Yvonne broke a record. TWICE

Yvonne HAS BROKEN a record twice.

300

She regrets not coming to the party. (should)

She should have come to the party.

400

The investors were upset. Their money was gone. 

The investors, whose money was gone, were upset. 

400

I won't leave before you come. 

When you come, I....

When you come, I WILL BE WAITING for you. 

400

She cooked dinner. Then she watched TV. AFTER

She watched TV after she HAD COOKED dinner.

400

It's possible that the audience forgot the song. (may)

The audience may have forgotten the song.

500

I'll meet you at the food truck festival. It's taking place in the car park.

I'll meet you at the food truck festival, WHICH is taking place in the car park.  

500

Joan and I intend to set off this afternoon. SETTING

Joan and I ARE SETTING off this afternoon.

500

He planned the speech 10 years before the wedding. FOR

He HAD BEEN PLANNING the speech for 10 years. 

500

I’m sure that Mrs Smith didn’t leave home. (can’t)

Mrs Smith can't have left home.