ことができる details
write + can do
kaku koto ga dekiru
can do; be able to do
meaning: can write
この川、夏は泳ぐことができるんだって。
kono kawa, natsu wa oyogu koto ga dekiru n datte.
Apparently you can swim in this river in the summer. casual
このカードは海外でも使うことができる。
kono kaado wa kaigai de mo tsukau koto ga dekiru.
This card can be used overseas too. neutral
- negative
- past
- polite
Examples
can; be able to — ability or permitted possibility stated plainly
この川、夏は泳ぐことができるんだって。
kono kawa, natsu wa oyogukotogadekiru n datte.
Apparently you can swim in this river in the summer. casual
このカードは海外でも使うことができる。
kono kaado wa kaigai de mo tsukaukotogadekiru.
This card can be used overseas too. neutral
ご登録後は、いつでも予約を変更することができます。
go tourokugo wa, itsudemo yoyaku o henkousurukotogadekimasu.
After registering, you can change your reservation at any time. formal
Formation
{V}ことができるattaches to dictionary form
Notes
Related patterns
Similar
Same ability, two builds — ことができる is periphrastic, works on every verb without class rules, and skews formal/written (notices, contracts, announcements); the one-word potential (読める・食べられる) is the spoken default, so 泳ぐことができる in conversation sounds like a posted sign.
Lookalikes
One verb apart at reading speed — することができる asserts ability, することがある asserts occasional occurrence; skimming past できる/ある flips capability into frequency.
Same meaning
can do
| Pattern | Attaches to |
|---|---|
| られる(可能) |