~ことができる (can do)
grammar115 sentences
The pattern [verb-dictionary]+ことができる / ことができない, literally 'the act of X-ing is/isn't possible,' meaning 'can do X / cannot do X.' A periphrastic alternative to the inflectional potential form (~れる/~られる/~える); slightly more formal and explicit, often preferred in writing, technical contexts, or when explicitly contrasting ability and inability. Common variants: ~することができる (after a noun + する), ~ことはできない (with contrastive は for emphatic refusal).