Phrases Expressions of Agreement and Disagreement

I'm not so sure about that.

C1

Meaning

I express doubt or uncertainty.

Example sentences

John: 'The project will be completed on time.'

Alice: 'I'm not so sure about that. There are still many challenges to overcome.'

John: 'I'm not so sure about that. We need proper training before implementation.'

Alice: 'The new software will increase productivity.'