Sample sentences from A Dictionary of Basic Japanese Grammar page 270:

A: ちょっと話がしたいんですが。

B: じゃ、コーヒーを飲みながら話しましょう。

C: じゃ、話しながらコーヒーを飲みましょう。

It states that B is an acceptable response to A but C is not, but I cannot understand why. The action is the same right? You will talk while drinking coffee. Both B and C look the same to me because you will still talk to each other no matter the concurrent action you do.

Another question: do I always need a direct object? I wrote "私は本を読みながらかきます" and my teacher told me to add a direct object for かきます - is it really needed?

  • 1
    That's not Japanese language problem, but linguistic. If you use C's sentence, the action before "ながら" is secondary even though the primary action should be the talk, '話す' in this scenario. As for second question, I felt the same way your teacher told you, yes, it needs an object. Why? Japanese "かく" doesn't mean just "write", but it also includes "draw". W/o an object a lister won't understand what you "かく", that is, writing, drawing or other can be. In written from, you can distinguish one from other by Kanji, "書く" and "描く" without any specification, in other words, you don't need an object. – Mat Watershed Oct 15 '18 at 15:25

Like the Dictionary of Basic Japanese Grammar says:

ながら expresses an action that occurs concurrently or simultaneously with another action. The action expressed by Verbながら is always secondary to the action expressed in the main clause.

B: じゃ、コーヒーを飲みながら話しましょう。

Then, let's talk over a cup of coffee.

C: *じゃ、話しながらコーヒーを飲みましょう。

Then, let's drink a cup of coffee while talking.

In this scenario, the speaker and the listener have something important to talk about, and the speaker suggests to talk about it while drinking coffee. Therefore, the most important thing is talking, and the secondary thing is drinking. Note that the main verb of these sentences is the one at the end of the sentence, as it often is in Japanese.

Another question: do I always need a direct object? I wrote "私は本を読みながらかきます" and my teacher told me to add a direct object for かきます - is it really needed?

I think the prof is saying that they don't know what you are writing. For example, consider the following sentence:


Doesn't this sentence feel a bit uncomfortable? We don't know what the person is writing, so it feels like something is missing from the sentence. If somebody just told me "I'm writing.", I would want to ask them "What are you writing?"

In your example sentence, 本を belongs to 読みながら, so the verb かきます is just like in my example... uncomfortably incomplete. Even if we suppose that the reader is expected to infer that the object of かきます is also 本, it's still strange to be reading and writing the same book simultaneously, so it feels like the sentence would need more background to make sense.

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