He was not able to speak English.
He could not speak English.
- She was not able to answer the question. She couldn't answer the question.
- They were not able to translate the instruction. They couldn't translate the instruction.
- We were not able to get the tickets. We couldn't get the tickets.
- Mary was not able to repair the scooter. Mary couldn't repair the scooter.
- Jerry was not able to park his car in front of the hospital. Jerry couldn't park his car in front of the hospital.
- My parents were not able to find the information. My parents couldn't find the information.
- Sally was not able to save any money. Sally couldn't save any money.
- His classmates were not able to pass the test. His classmates couldn't pass the test.
- My grandparents were not able to visit us yesterday. My grandparents couldn't visit us yesterday.
- I was not able to catch the bus yesterday. I couldn't catch the bus yesterday.