Day N5 - 15 - Grammar Practice

Complementary Exercises: Daily N5 - Day 15

After reading the lesson text, practice the grammar points introduced in Day N5-15.

These exercises focus on recognizing mistakes, choosing correct patterns, and producing your own sentences.

Grammar practiced:
✓ V1[た-form]り、V2[た-form]ă‚Šă—ăŸă™
✓ V[ăŸă™-form]ăȘがら、V2
✓ ~ăŒă§ăăŸă™
✓ è¶Łć‘łăŻ N です
✓ べき

1. Understand

Goal: Recognize and understand how the grammar is used.
Focus on identifying correct patterns and noticing common mistakes.

🔍 Find the Error

Identify the sentence that contains a grammar mistake or unnatural usage.
Goal: Train your ability to notice incorrect grammar patterns and avoid common mistakes.

1: Which sentence is grammatically incorrect?

Choices
A: é€±æœ«ăŻæ˜ ç”»é€šăžèĄŒăŁăŸă‚Š、ć–«èŒ¶ćș—ăžèĄŒăŁăŸă‚Šă—ăŸă™。
B: ご飯を食ăčるăȘăŒă‚‰éŸłæ„œă‚’èžăăŸă™。
C: 暇ăȘべき、ć‹é”ă«äŒšă„ăŸă™。
D: ćœŒăŻæ–™ç†ăŒă§ăăŸă™。
Answer
B
Correct Sentence: ご飯を食ăčăȘăŒă‚‰éŸłæ„œă‚’èžăăŸă™。
Explanation: The pattern ~ăȘがら means “while doing” and is attached to the ăŸă™-stem of a verb, not to its dictionary form. For 食ăčる, the ăŸă™-form is 食ăčăŸă™, so the stem is 食ăč.

2: Which sentence is grammatically incorrect?

Choices
A: é€±æœ«ăŻć…Źćœ’ă§è”°ăŁăŸă‚Š、æ•Łæ­©ă—ăŸă‚Šă—ăŸă™。
B: 歩生ăȘべき、æŻŽæ—„è‹±èȘžă‚’ć‹‰ćŒ·ă—ăŸă—ăŸ。
C: ćœŒăŻăƒ”ă‚ąăƒŽăŒă§ăăŸă™。
D: è¶Łć‘łăŻéŸłæ„œă§ă™。
Answer
B
Correct Sentence: 歩生ぼべき、æŻŽæ—„è‹±èȘžă‚’ć‹‰ćŒ·ă—ăŸă—ăŸ。
Explanation: Before べき, a noun is normally connected with た, so 歩生ぼべき means “when I was a student.” The form ăȘ is used before certain expressions with ăȘ-adjectives, but 歩生 is a noun.

3: Which sentence is grammatically incorrect?

Choices
A: ご飯を食ăčăȘăŒă‚‰æ–°èžă‚’èȘ­ăżăŸă™。
B: è¶Łć‘łăŻăƒ”ă‚ąăƒŽă§ă™。
C: é€±æœ«ăŻæ–™ç†ă‚’ă—ăŸă‚Š、éŸłæ„œă‚’èžă„ăŸă‚Šă—ăŸă™。
D: ćœŒăŻæ–™ç†ăŒă§ăă‚‹ăŸă™。
Answer
D
Correct Sentence: ćœŒăŻæ–™ç†ăŒă§ăăŸă™。
Explanation: The potential form できる becomes ă§ăăŸă™ in polite speech, so ă§ăă‚‹ăŸă™ is incorrect because ăŸă™ cannot be attached directly to the dictionary form できる.

4: Which sentence is grammatically incorrect?

Choices
A: 漿題をするăȘăŒă‚‰éŸłæ„œă‚’èžăăŸă™。
B: ćŒŸăŻă‚čăƒăƒŒăƒ„ăŒă§ăăŸă™。
C: è¶Łć‘łăŻæ—…èĄŒă§ă™。
D: 惍きăȘăŒă‚‰ć‹‰ćŒ·ă—ăŸă™。
Answer
A
Correct Sentence: 漿題をしăȘăŒă‚‰éŸłæ„œă‚’èžăăŸă™。
Explanation: The pattern ~ăȘがら is attached to the ăŸă™-stem of a verb, not to its dictionary form. For する, the polite form is ă—ăŸă™, so the stem is し; therefore, しăȘがら is correct.

✅ Choice

Choose the best option to complete the sentence.
Goal: Practice selecting the correct grammar form according to the context.

1: ç§ăŻè‹±èȘž(      )が、æ—„æœŹèȘžăŻăŸă äžŠæ‰‹ă§ăŻă‚ă‚ŠăŸă›ă‚“。

Choices
A: ă‚’äžŠæ‰‹ă§ă™
B: ă‚’ă§ăăŸă™
C: ăŒă§ăăŸă™
D: ăŒă—ăŸă™
Answer
C
Explanation: With できる, meaning “can do” or “be able to,” the thing a person is able to do is normally marked with が, so 英èȘžăŒă§ăăŸă™ means that the speaker can use/speak English. äžŠæ‰‹ă§ă™ also normally takes が (or は when used as a topic), not を, so ă‚’äžŠæ‰‹ă§ă™ is ungrammatical.

2: ç§ăŻæŻŽæ—„、éŸłæ„œă‚’(      )、ćźżéĄŒă‚’ă—ăŸă™。

Choices
A: èžăăȘがら
B: èžăăȘがら
C: èžă„ăŠăȘがら
D: èžă„ăŸăȘがら
Answer
B
Explanation: To express “while doing something,” Japanese uses the ăŸă™-stem of a verb + ăȘがら.

3: ç§ăŻæ—„æ›œæ—„ă«ă‚čăƒăƒŒăƒ„ă‚’ă—ăŸă™。(      )。

Choices
A: è¶Łć‘łăŻă‚čăƒăƒŒăƒ„ă§ă™
B: è¶Łć‘łăŒă‚čăƒăƒŒăƒ„ă‚’ă—ăŸă™
C: è¶Łć‘łăŻă‚čăƒăƒŒăƒ„ăŒă‚ă‚ŠăŸă™
D: è¶Łć‘łă‚’ă‚čăƒăƒŒăƒ„ă§ă™
Answer
A
Explanation: è¶Łć‘łăŻ~です is a standard pattern used to say what someone’s hobby is, so è¶Łć‘łăŻă‚čăƒăƒŒăƒ„ă§ă™ is grammatically correct.

4: (      )、ć…Źćœ’ă‚’æ•Łæ­©ă—ăŸă™。

Choices
A: æš‡ă„ăšă
B: æš‡ăźăšă
C: 暇ăȘべき
D: æš‡ă ăšă
Answer
C
Explanation: 暇 is a ăȘ-adjective, and when a ăȘ-adjective directly modifies a noun, it takes ăȘ before that noun. Since べき functions as a noun meaning “time” or “when,” the correct form is 暇ăȘべき.

✏️ Correct

Find and fix the grammar mistake in the sentence.
Goal: Practice applying grammar rules and producing accurate Japanese sentences.

1: ç§ăŻăƒ”ă‚ąăƒŽă‚’ćŒŸăă“ăšăŒă§ăăŸă™。

Answer
ç§ăŻăƒ”ă‚ąăƒŽă‚’ćŒŸăă“ăšăŒă§ăăŸă™。
Explanation: The pattern verb + ă“ăšăŒă§ăăŸă™ is used to express ability, and the verb before こべ must be in its dictionary form. ćŒŸă is the stem of ćŒŸăăŸă™, so it cannot be used directly before ă“ăšăŒă§ăăŸă™.

2: ćŒŸăŻè‹±èȘžăŒă§ăăŸă›ă‚“です。

Answer
ćŒŸăŻè‹±èȘžăŒă§ăăŸă›ă‚“。
Explanation: ă§ăăŸă›ă‚“ is already the polite negative form of the verb できる, so it does not need です after it.

3: ç§ăźè¶Łć‘łăŻă‚čăƒăƒŒăƒ„ăȘです。

Answer
ç§ăźè¶Łć‘łăŻă‚čăƒăƒŒăƒ„ă§ă™。
Explanation: When a noun comes before です, it connects directly to です without ăȘ.
⚠️
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