こと Nominalizer / ことがある / のは〜だ

Turn verbs into nouns / Sometimes / What ~ is ~

'Learning languages is fun.' 'I sometimes miss the train.' 'The problem is the cost.' Three related patterns all using こと or の to turn actions into things you can talk about.

What you'll learn

• 辞書形 + こと: nominalize a verb (general fact/concept)
• 〜ことがある: sometimes ~ / there are times when ~
• 〜たことがある: have done before | 〜のは〜だ: What ~ is ~ (cleft)

JLPT N4 Japanese self-study — interactive practice, instant feedback, completely free.