Mae Ni and Ato De: Before and After an Action

前に and 後で locate one action relative to another. The verb attachment changes: 食べる前に but 食べた後で. The dictionary form before 前に does not make the whole sentence future; the final predicate determines the main time.

Formation and use

Use the dictionary form before 前に even in a past account: 寝る前に本を読みました. Reading happened before sleeping; 寝た前に is not the target pattern.

Use た before 後で: 食べた後で歯を磨きます. The first action has been completed relative to the second, even when the second is a future plan.

Comparisons and common errors

Nouns take の: 授業の前に, 仕事の後で. These time expressions differ from physical 本の前に when 前 means in front of something; context identifies the time or space reading.

Compare 食べてから with 食べた後で. Both can place eating first, but てから often highlights that the first action is a prerequisite or clear starting point. Avoid inventing an exact time gap for either form.

Practise with explanations

Try the 10 questions below, or open the practice set. Check each answer or the whole set, read the explanation, and retry mistakes. First-attempt results are kept separately on this device.

Connected lessons

• Te Kara: Do One Action Before the Next
• Japanese Ta Form: Plain Past Conjugation
• Position Words