Translation of "Infinitive" in Japanese

An infinitive without a 'to' attached is called a bare infinitive.

toのつかない不定詞を原形不定詞と言う。

The following verbs only take the to-infinitive as their object.

次の動詞はｔｏ不定詞だけを目的語にとります。

'Needless to say' is often used as an idiomatic expression in the infinitive.

needless to sayは不定詞の慣用表現として紹介されることが多いです。

There are two ways of using the infinitive as an adjective, 1. attributive, 2. predicative. Naturally 2. is a subject complement.

不定詞の形容詞的用法には２種類あり、①限定用法、②叙述用法。②はもちろん主格補語です。