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I've got confused and have a few questions:

In some situations speaker is obligated to change the particle e.g. answering
yes/no questions.

> Question: あなたはくじ **に** ひこうきにのりますか。(A)
>
> Answer: いいえ、わたしはくじ **には** ひこうきにのりません。じゅうじにのります。(B)

But what if I do not answer any question? I can simply say:

> 本をたくさん読みます。(C)

Is it grammatically correct?

The verb here is 読み (read).  
Read what? > A book = 本 = direct object  
Who read? > I read = わたし = subject (implied)

1.) Is it correct to say:

> 本はたくさん読みます。(D)

In this situation we will have two は in one sentence:

> (わたしは)本はたくさん読みます。(E)

Is this situation OK? Isn't it confusing for the person who is a receiver of
this statement?

2.) Do we have to change を to は in negative statements?

Or is it correct to say:

> 本をたくさん読みません。 (F)

Or should it be:

> 本はたくさん読みません。 (G)

3.) How do we exactly understand statements F and G?

Do the particles have impact on meaning here?

Thank you very much in advance.
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2018-12-19T19:26:37.933
64491
2018-12-24T16:33:53.560
32215
question
grammar meaning particles particle-は particle-を
Changing を to は in negative statements
[This answer](https://japanese.stackexchange.com/a/1130/32315) talks a bit
about the にand には differences. I think a good distinction to make is that には,
とは and such should be treated as special particles - you can't really just
combine particles willy-nilly.

As for the other sentences, the は in D, G and E don't really make sense (at
least to me), mainly because a sentence can't really have two subjects. So C
is the best.

Now this extends to the negative sentences as well. In your examples you'd
still use を.

Also, the use of たくさん doesn't really make sense in a negative sentence.
Instead you should say "not much" or あまり.

> 本をあまり読みません。

Finally, just an extra note. You can use 本は by making 読む a passive verb.

> 本は読まれました。

( The book was read. )

Hope this helps!
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2018-12-20T02:04:05.650
64494
2018-12-20T02:04:05.650
32315
64491
answer
In fact, both E, G make sense to me, but one condition. 本は読まない sounds that you
are implying reading something else, like manga. But you're expected to
explain the alternative after that. Let's say you have habits (A,B,C,E) but
the speaker just asks you "Dをしますか？", you probably say "Dはしません でもAはしますよ". It's
equal to say "I don't do D but I do A" which is the same category to the
question. So 本はたくさん読みません tells you don't just read books but you wanna say
that you have another thing that you do a lot.
CC BY-SA 4.0
2018-12-24T16:33:53.560
64559
2018-12-24T16:33:53.560
32345
64491
answer