B2 · Upper Intermediate Chapter 6

Hypotheticals, Certainty, and Reporting Information

5 Total Rules
50 examples
7 min
Rules in This Chapter Quick Practice

Chapter in 30 Seconds

Master the art of hypothetical scenarios, firm convictions, and professional information reporting in Japanese.

  • Construct complex hypothetical scenarios for planning and deliberation.
  • Express strong personal conviction and identify the core essence of situations.
  • Report hearsay and objective information with professional precision.
Speak with clarity, conviction, and native-level precision.

What You'll Learn

Hey buddy, ready to level up and speak like a pro in Japanese? In this chapter, we're saying goodbye to simple sentences and diving into the more complex and exciting world of Japanese! Here, you'll learn how to pose hypothetical scenarios, for example, when you're planning a trip with friends and say If this happens... or Assuming that..., you'll use 'としたら' and 'とすれば' just like natives. Do you want to express an impossible wish or say

If only I could...?
With 'ものなら', you'll convey your feelings beautifully and authentically. Next, we'll tackle how to express a certain conclusion. When you've deduced something from clues and are 100% sure, you'll say
It must be this!
with 'に違いない'. Or, when you want to explain the essence of something and say
This is nothing other than that!
, you'll use 'にほかならない', which sounds very elegant and formal. Finally, you'll learn how to report hearsay or information you've heard or aren't sure you witnessed yourself, using '~ということだ', like I heard that... or It means that.... With these, you'll convey information like a professional Japanese reporter! With these 5 grammar points, not only will your vocabulary deepen, but you'll also be able to express your intentions with greater precision and subtlety, thinking and speaking exactly like a native. So, let's go, because this chapter is going to help you speak much more fluently and naturally!

Learning Objectives

By the end of this chapter, you will be able to:

  1. 1
    By the end you will be able to: Use hypothetical structures to organize travel plans with friends.
  2. 2
    By the end you will be able to: Express high-certainty opinions regarding work-related observations.

Chapter Guide

Overview

Welcome, language adventurers, to a pivotal chapter in your Japanese grammar B2 journey! If you're ready to move beyond basic sentence structures and express yourself with greater sophistication and nuance, you've come to the right place. This chapter is designed to elevate your communication skills, helping you articulate complex ideas, speculate about future events, express strong convictions, and report information like a true native speaker. Mastering these patterns is essential for anyone aiming for fluency and a deeper understanding of Japanese thought processes.
At the B2 CEFR level, the focus shifts from simply being understood to communicating effectively and precisely in a wide range of situations. Here, we'll explore five powerful Japanese grammar points that will unlock new dimensions in your conversations. From setting up hypothetical scenarios with としたら and とすれば, to expressing impossible dreams with ものなら, asserting certainty with に違いない, defining core truths with にほかならない, and relaying reported information using ~ということだ, each rule offers a unique way to refine your expression. Get ready to sound more natural, more confident, and truly engage with the subtleties of the Japanese language.

How This Grammar Works

Let's break down the mechanics of these powerful B2 Japanese grammar structures, giving you the tools to express yourself with precision.
First, for assuming scenarios, we have としたら and とすれば. These are used to set up hypothetical conditions or premises, often when making plans or considering possibilities. としたら generally means "if X were the case" or "assuming X," focusing on a specific premise. とすれば is very similar, often interchangeable, but can sometimes imply a slightly more logical deduction or a premise for further reasoning.
* としたら: 明日雨が降るとしたら、ピクニックは中止だ。(Ashita ame ga furu to shitara, pikunikku wa chuushi da.) (Assuming it rains tomorrow, the picnic is canceled.)
* とすれば: その計画が成功するとすれば、大きな利益が得られるだろう。(Sono keikaku ga seikou to sureba, ookina rieki ga erareru darou.) (If that plan succeeds, we will probably gain a large profit.)
Next, to express an impossible wish or a regret about something that can't happen, we use ものなら. This structure often conveys a strong desire for something that is difficult or impossible to achieve, carrying a sense of "if only I could..."
* ものなら: 時間を戻せるものなら、あの時こう言いたかった。(Jikan o modoseru mono nara, ano toki kou iitakatta.) (If only I could turn back time, I would have wanted to say this then.)
When you want to convey certainty based on strong evidence or logical deduction, you use に違いない. This expresses a firm conviction, meaning "it must be," "there's no mistake that," or "it's certainly the case."
* に違いない: 彼の話し方からすると、日本人であるに違いない。(Kare no hanashikata kara suru to, Nihonjin de aru ni chigai nai.) (Judging from the way he speaks, he must be Japanese.)
To define the essence of something, stating that "it is nothing other than X" or "it is truly X," we use にほかならない. This is a more formal and emphatic way to make a definitive statement about the true nature of something.
* にほかならない: 彼の成功は、努力の成果にほかならない。(Kare no seikou wa, doryoku no seika ni hoka naranai.) (His success is nothing other than the result of his efforts.)
Finally, for reporting hearsay or information you've heard, or to explain the general meaning of something, we use ~ということだ. This translates to "I heard that," "it means that," or "it is said that," allowing you to relay information indirectly.
* ~ということだ: 彼は来週から出張だということだ。(Kare wa raishuu kara shucchou da to iu koto da.) (I heard that he will be on a business trip starting next week.)

Common Mistakes

Navigating these advanced Japanese grammar patterns can sometimes lead to common pitfalls. Here are a few to watch out for:
  1. 1✗ Wrong: 明日雨が降るなら、ピクニックは中止だ。(Ashita ame ga furu nara, pikunikku wa chuushi da.) (If it rains tomorrow, the picnic is canceled.)
✓ Correct: 明日雨が降るとしたら、ピクニックは中止だ。(Ashita ame ga furu to shitara, pikunikku wa chuushi da.) (Assuming it rains tomorrow, the picnic is canceled.)
*Explanation:* While なら is a valid conditional, としたら specifically implies "assuming a certain scenario" rather than just a simple "if." It sets up a premise for discussion or planning, which is the nuance we're aiming for in this B2 context.
  1. 1✗ Wrong: 彼はとても疲れているはずだ。(Kare wa totemo tsukarete iru hazu da.) (He should be very tired.)
✓ Correct: 彼はとても疲れているに違いない。(Kare wa totemo tsukarete iru ni chigai nai.) (He must be very tired.)
*Explanation:* はずだ implies expectation or likelihood, often based on general knowledge or a schedule. に違いない expresses a much stronger degree of certainty, a firm conclusion drawn from evidence or logical inference, which is the core meaning of this grammar point.
  1. 1✗ Wrong: 彼は忙しいと言いました。(Kare wa isogashii to iimashita.) (He said he was busy.)
✓ Correct: 彼は忙しいということだ。(Kare wa isogashii to iu koto da.) (I heard that he is busy.)
*Explanation:* Using ~ということだ implies reporting information you've heard from someone else or that is generally known, rather than directly quoting what someone *said*. If you directly heard it from him, と言いました is fine, but ~ということだ signals indirect reporting or general understanding.

Real Conversations

Let's see these Japanese grammar points in action through some everyday dialogues.

A

A

来月、北海道に旅行に行くとしたら、どこに行きたい？ (Raigetsu, Hokkaido ni ryokou ni iku to shitara, doko ni ikitai?) (If we were to go on a trip to Hokkaido next month, where would you want to go?)
B

B

札幌の雪まつりは見たいな。でも、寒さに耐えられるものなら、もっと北の方まで行ってみたい。(Sapporo no Yuki Matsuri wa mitai na. Demo, samusa ni taerareru mono nara, motto kita no hou made itte mitai.) (I want to see the Sapporo Snow Festival. But if only I could withstand the cold, I'd want to go further north.)
A

A

彼のあの自信満々な態度を見ると、プロジェクトは成功するに違いない。(Kare no ano jishin manman na taido o miru to, purojekuto wa seikou suru ni chigai nai.) (Seeing his confident attitude, the project must succeed.)
B

B

そうだね。彼のリーダーシップは、成功の鍵にほかならないよ。(Sou da ne. Kare no riidaashippu wa, seikou no kagi ni hoka naranai yo.) (You're right. His leadership is nothing other than the key to success.)
A

A

田中さん、今日の会議には参加しないということだね。(Tanaka-san, kyou no kaigi ni wa sanka shinai to iu koto da ne.) (So, I heard Mr. Tanaka won't be attending today's meeting, right?)
B

B

ええ、急な出張が入ったということですよ。(Ee, kyuu na shucchou ga haitta to iu koto desu yo.) (Yes, I heard he had a sudden business trip come up.)

Quick FAQ

Q

What's the main difference between としたら and とすれば in B2 Japanese grammar?

While largely interchangeable, としたら often sets a specific premise, whereas とすれば can imply a slightly more logical deduction or a premise for further reasoning, though the distinction is subtle in common usage.

Q

Can ものなら be used for achievable goals, or is it strictly for impossible wishes?

ものなら is primarily used for wishes that are difficult or impossible to achieve, expressing regret or a strong desire for something that isn't likely. For achievable goals, simpler conditional forms are generally used.

Q

Is にほかならない common in everyday spoken Japanese?

にほかならない is more formal and emphatic. While understood, it's more frequently encountered in written Japanese, speeches, or formal discussions rather than casual daily conversation.

Q

How does ~ということだ differ from ~らしい or ~そうだ for reporting information?

~ということだ reports information as a general understanding or something heard, often from a reliable source or a general consensus. ~らしい indicates something "seems like" or "appears to be" based on observation or vague hearsay, while ~そうだ (reported speech) means "I heard that..." from a specific source, or (look/appear) "it looks like..." based on direct observation.

Cultural Context

These Japanese grammar patterns are crucial for expressing nuanced thought, reflecting a cultural emphasis on indirectness and precision. としたら and とすれば allow for polite speculation, common in collaborative planning. に違いない demonstrates confidence and logical reasoning, valued in professional settings. にほかならない is often used to make definitive, almost philosophical statements, lending authority to one's words. Finally, ~ということだ is a cornerstone of indirect communication, prevalent in a society where direct confrontation or assertion can sometimes be avoided in favor of reporting general understanding.

Key Examples (8)

1

If you won 100 million yen, what would you do?

If you won 100 million yen, what would you do?

Assuming scenarios with 'としたら' and 'とすれば'
2

If I were to redo my life, I'd want to be a doctor.

If I were to redo my life, I'd want to be a doctor.

Assuming scenarios with 'としたら' and 'とすれば'
3

Kaereru mono nara, ima sugu kuni e kaeritai.

If I could go back home, I'd want to go right now.

If I could (Impossible Wish) (~mono nara)
4

Kawareru mono nara, kawatte yaritai.

If I could trade places with you, I would.

If I could (Impossible Wish) (~mono nara)
5

彼はもう寝たに違いない。

He must have gone to sleep already.

I'm Certain! (~ni chigai nai)
6

その映画は面白いに違いない。

That movie must be interesting.

I'm Certain! (~ni chigai nai)
7

Success is nothing other than the result of hard work.

Success is nothing other than the result of hard work.

Defining the Essence: 'Nothing Other Than' (~にほかならない)
8

The reason he got angry is purely because he is worried about you.

The reason he got angry is purely because he is worried about you.

Defining the Essence: 'Nothing Other Than' (~にほかならない)

Tips & Tricks (4)

💡

Use 'Moshi'

Adding 'moshi' at the beginning of the sentence makes the hypothetical nature very clear.
frontend.learn_grammar.from_rule: Assuming scenarios with 'としたら' and 'とすれば'
💡

Focus on Emotion

Don't just translate the words; feel the regret behind the sentence.
frontend.learn_grammar.from_rule: If I could (Impossible Wish) (~mono nara)
💡

Evidence is Key

Only use this when you have a reason for your guess. If you are just guessing, use 'kamoshirenai'.
frontend.learn_grammar.from_rule: I'm Certain! (~ni chigai nai)
💡

Use sparingly

Don't use it in every sentence, or you will sound like a politician.
frontend.learn_grammar.from_rule: Defining the Essence: 'Nothing Other Than' (~にほかならない)

Key Vocabulary (5)

想定(そうてい) assumption/supposition 確信(かくしん) conviction/certainty 本質(ほんしつ) essence/nature 伝聞(でんぶん) hearsay/report 願望(がんぼう) desire/wish

Real-World Preview

briefcase

Project Planning Meeting

Review Summary

  • Plain form + としたら/とすれば
  • Verb (potential) + ものなら
  • Plain form + に違いない
  • Noun + にほかならない
  • Plain form + ということだ

Common Mistakes

Do not add 'da' after 'ni chigai nai', as it already carries a assertive nuance.

Wrong: 雨が降るに違いないだ。
Correct: 雨が降るに違いない。

The conditional 'tara' should not be doubled. Use the dictionary form before 'toshitara'.

Wrong: もし行けばとしたら...
Correct: もし行くとしたら...

The pattern always uses the negative form 'hoka naranai'.

Wrong: これは本質にほかなる。
Correct: これは本質にほかならない。

Next Steps

You've conquered the hardest part of B2. Keep pushing, and your fluency will be indistinguishable from a native speaker!

Listen to a Japanese news clip and identify hearsay reports.

Continue to: Habits, Warnings, and Professional Nuance

Quick Practice (10)

Fill in the blank.

戻れる___なら、戻りたい。

✓ Correct! ✗ Not quite. Correct answer: もの
The grammar is ~mono nara.

frontend.learn_grammar.from_rule: If I could (Impossible Wish) (~mono nara)

Correct the error in the sentence.

Find and fix the mistake:

もし彼が来ないとしたら、会議はどうする？

✓ Correct! ✗ Not quite. Correct answer: a
The sentence is already correct.

frontend.learn_grammar.from_rule: Assuming scenarios with 'としたら' and 'とすれば'

Fill in the blank.

この成功は努力___。

✓ Correct! ✗ Not quite. Correct answer: a
Correct emphatic structure.

frontend.learn_grammar.from_rule: Defining the Essence: 'Nothing Other Than' (~にほかならない)

Complete the sentence.

明日は雨が ___ ということだ。

✓ Correct! ✗ Not quite. Correct answer: 降る
Must use plain form.

frontend.learn_grammar.from_rule: ~to iu koto da: Reporting Hearsay ('I've heard that...')

Correct the sentence.

Find and fix the mistake:

お金ものなら、買いたい。

✓ Correct! ✗ Not quite. Correct answer: お金があるものなら
Needs a verb.

frontend.learn_grammar.from_rule: If I could (Impossible Wish) (~mono nara)

Select the correct form.

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: 彼は行くということだ
Full structure required.

frontend.learn_grammar.from_rule: ~to iu koto da: Reporting Hearsay ('I've heard that...')

Choose the correct sentence.

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Don't use for self.

frontend.learn_grammar.from_rule: I'm Certain! (~ni chigai nai)

Fix the error.

Find and fix the mistake:

会議は中止だということでした。

✓ Correct! ✗ Not quite. Correct answer: 会議は中止だということだ
Reporting structure is usually plain.

frontend.learn_grammar.from_rule: ~to iu koto da: Reporting Hearsay ('I've heard that...')

Choose the correct sentence.

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: 行けるものなら、行きたい。
It expresses a wish.

frontend.learn_grammar.from_rule: If I could (Impossible Wish) (~mono nara)

Choose the correct structure for a formal business meeting.

この計画が成功___、大きな利益が出るでしょう。

✓ Correct! ✗ Not quite. Correct answer: b
Formal logical deduction uses 'tosureba'.

frontend.learn_grammar.from_rule: Assuming scenarios with 'としたら' and 'とすれば'

Score: /10

Common Questions (6)

Yes, you can use them with past plain forms to discuss hypothetical past scenarios, e.g., 'If I had gone, I would have seen him.'
No, it can be used for present or past hypothetical states.
No, it is strictly for hypothetical, impossible wishes.
Yes, it attaches to the dictionary form of a verb.
No, it is for observing others or situations.
It is neutral, but carries a strong tone.
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Describing Feelings, Vibes, and Overwhelming States
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Habits, Warnings, and Professional Nuance
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