am/is/are able to
was/were able to
will be able to
was/were able to
will be able to
Could you find any clothes on sale?
Were you able to find any clothes on sale?
They couldn’t win the National Championship.
They were not able to win the National Championship.
Phillip should be more careful with his money!
Phillip needs to be more careful with his money!
Do parents must pay for their children's education?
Do parents have to pay for their children's education?
Karen can meet you at the platform 5
Karen will be able to meet you at the platform 5
Kevin can’t come to your party next week, he’s busy.
Kevin won't be able to come to your party next week, he’s busy.
They should be more careful with their expenses last month.
They needed to be more careful with their expenses last month.
You must buy me a present! I do wait for it!
You have to buy me a present! I do wait for it!
Can you count all the different currencies in the world?
Are you able to count all the different currencies in the world?
I couldn't be a doctor anymore because my license had been revoked
I wasn't able to be a doctor anymore because my license had been revoked
Patrick should go shopping next week!
Patrick will need to go shopping next week!
If you want to get to the shopping centre by ten, you must leave at nine.
If you want to get to the shopping centre by ten, you will have to leave at nine.
Could Claire and Chris invest their money wisely?
Were Claire and Chris able to invest their money wisely?
I couldn’t ride a bike when I was three.
I wasn't able to ride a bike when I was three.
Craig should pay the phone bill yesterday, but he forgot.
Craig needed to pay the phone bill yesterday, but he forgot.
There must be a solution to the problem. I know it!
There has to be a solution to the problem. I know it!
Jeremy can buy whatever he wants. She's a shopaholic!
Jeremy is able to buy whatever he wants. She's a shopaholic!
She could play chess when she was seven.
She was able to play chess when she was seven.
You should pay for your purchases from your bank account, instead of buying now and shopping later!
You need to pay for your purchases from your bank account, instead of buying now and shopping later!
Helen must learn Spanish. It's necessary for her new job.
Helen has to learn Spanish. It's necessary for her new job.