Describe her ability using a model verb in the past tense
She couldn't/wasn't able to swim
Describe her ability using a model verb in the past tense
She didn't manage to/wasn't able to/couldn't open the jar
Describe his ability using a model verb in the past tense
He managed to lose weight
Describe his ability using a model verb in the past tense
He couldn't/wasn't able to/didn't manage to pass his exam