Opinion and Explanation Texts (Main Guide)
Master Class: Opinion and Explanation Texts (意見と説明の文章)
Level: JLPT N3
Focus: Reading Comprehension (読解) & Written Expression (文法)
Welcome to your N3 master class. Moving from N4 to N3 means transitioning from simple, factual descriptions to understanding nuanced opinions (意見 - いけん) and logical explanations (説明 - せつめい).
In N3 reading sections and daily Japanese media, authors rarely state their opinions bluntly. Instead, they use specific grammatical structures to soften their claims or build logical arguments. Today, we will master these key patterns and learn how to dissect N3-level texts.
1. Core Grammar for Opinions & Explanations
Pattern A: ~のではないだろうか / ~のではないか
- Meaning: "Isn't it the case that...?" / "I think that... (rhetorical/polite opinion)"
- Usage: Authors use this to state their main opinion gently, making it sound like an invitation to agree rather than an aggressive demand.
- Form:
- Verb (Plain) + のではないだろうか
- い-Adj + ののではないだろうか
- な-Adj + な + のではないだろうか
- Noun + な + ののではないだろうか (Note: 「だろうか」 is more formal than 「か」)
Example:
現代人はスマートフォンの画面を見すぎているのではないだろうか。
(Isn't it the case that modern people look at smartphone screens too much? / I believe modern people look at screens too much.)
Pattern B: ~ということだ
- Meaning: "This means that..." / "The fact is..."
- Usage: Used to define a concept, summarize a point, or draw a logical conclusion from evidence.
- Form: Plain Form + ということだ
Example:
売り上げが落ちている。つまり、この商品は人気がないということだ。
(Sales are falling. In other words, it means this product is not popular.)
Pattern C: ~(の)に対して (にたいして)
- Meaning: "In contrast to..." / "Unlike..."
- Usage: Essential for explanatory texts comparing two contrasting ideas, data points, or behaviors.
- Form: Noun + に対して / [Verb Plain + の] + に対して
Example:
都市部の人口が増えているのに対して、地方では減少し続けている。
(In contrast to the rising population in urban areas, it continues to decrease in rural areas.)
2. Reading Strategy: Spotting the "Author's Voice"
In N3 reading comprehension, you will often be asked: 「筆者が最も言いたいことは何か」 (What does the author want to say the most?)
To find the answer quickly, train your eyes to look for these transition words (接続詞 - せつぞくし) and markers near the end of the passage:
- つまり (In other words / In short): Signals a summary of the author's main point.
- したがって (Therefore): Introduces the logical conclusion.
- しかし / だが (However): Signals a shift from general facts to the author's actual opinion.
3. Sample Text Analysis
Read the N3-level paragraph below. Pay close attention to the highlighted structures.
近年、電子書籍(でんししょせき)を利用する人が増えている。紙の本に対して、電子書籍は軽くて持ち運びが便利だというメリットがある。しかし、紙の本には「手でページをめくる楽しさ」がある。
つまり、どちらが良いかということではなく、状況に合わせて使い分けることが大切なのではないだろうか。
Breakdown & Translation:
- Sentence 1: Introduces the topic (the rise of e-books).
- Sentence 2 (Comparison): Uses ~に対して to contrast paper books and e-books.
- Sentence 3 (The Turn): Uses しかし to introduce a counterpoint about paper books.
- Sentence 4 (The Conclusion): Uses つまり to signal the final summary, and wraps up with ~のではないだろうか to deliver the author's core opinion: "Isn't it important to use them differently depending on the situation?"
4. Quick Challenge
Translate the following sentence into Japanese using N3 grammar:
"Unlike last year, this year's exam is difficult. Therefore, isn't it necessary to study more?"
(Key Vocabulary: 去年 - きょねん, 今年 - ことし, 試験 - しけん, 難しい - むずかしい, したがって, もっと, 勉強する, 必要 - ひつよう)
<details> <summary><b>Click to reveal the model answer</b></summary></details>去年の試験に対して、今年の試験は難しい。したがって、もっと勉強する必要があるのではないだろうか。
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