JLPT N4 Grammar

Sentence build ★ · 文の組み立て

Order the four pieces; which goes in the ★ position?

母に手紙を＿＿＿＿＿＿ ★ ＿＿＿しました。

漢字をタップで読み方 · tap a kanji for its reading & to save it for review

解答と解説 · Show the full answer & explanation

訳 · Translation

I forgot to mail the letter to my mother.

正解 · Answer

わすれて

解説 · Why

"I forgot to mail the letter" is 出すのをわすれてしまいました. 〜のをわすれる = "forget to do"; 〜てしまう marks regret. Ordering places わすれて in the ★ slot.

誤答 · Why the other options are wrong

のを — The nominaliser のを follows the verb — second slot.

しまいま — Combines with した as 〜てしまう — fourth slot.

出す — The dictionary verb opens the phrase — first slot.

語彙 · Breakdown

〜のを忘れる—to forget to ~

〜てしまう—(regret) to end up ~ing

例文 · Example

かぎをかけるのをわすれてしまった。

Kagi o kakeru no o wasurete shimatta.

I forgot to lock the door.

配点 · Points & details

Est. points1 pt

DifficultyMedium

Avg. time42 sec

Correct rate38%

Appears in文の組み立て

AddedJul 2026

出典AI draft · human-reviewed

This question was drafted by AI and audited by human reviewers. Official JLPT scoring is scaled (0–60 per section); point values here are catalogue estimates.

衆智 · Community check8 attempts

38%of attempts answer correctly

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