Zài / Yīng / yǔ / zhōng / bù / dìng / shì / cháng / yóu / to / jiā / dòng / cí / yuán / xíng / gòu / chéng

在英语中，不定式常由“to”加动词原形构成。

In English, an infinitive is often formed with “to” plus the base form of a verb.