Changing を to は in negative statements


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.




[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!




[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!

