まだ and もう sentences to be marked

I'll be answering both the questions and answers in this.

1.

Q. Have you already memorised kanji? ( for now)

A. Yes, I have already memorised it.

2.

Q. Did you clean your room?

A. No, I have not cleaned the room yet.

3.

Q. Have you spoken to the new teacher?

A. No, I have not spoken to the teacher yet.

4.

Q. Have you done your homework already?

A. Yes, I did the homework yesterday.


My answers:

1.

Q. もうかんじをおぼえりましたか。

A. はい、もうおぼえりました。

2.

Q. へやをそうじしましたか。

A. いいえ、わたしはまだへやをそうじしていません。

3.

Q. あなたはあたらしいせんせいにはなしましたか。

A. いいえ、まだせんせいをはなしていません。

4.

Q. もう、しゅくだいをしましたか。

A. はい、わたしはきのうしゅくだいをしました。

Thank you!!

Also, in my book it says: " note that answers to もう questions require different verb forms in the affirmative and in the negative. "

Can someone please explain what this means in greater detail? Thanks.

おぼえる is an ichidan verb, therefore its polite form is おぼえます, not おぼえります. As a general rule, verbs that end with -eru or -iru are ichidan (though there are a few exceptions, e.g. かえる, はいる).

わたしは can be omitted. In Japanese, the subject is often dropped because it's clear from context, so using わたしは all the time sounds overly verbose. If you make a statement without a subject, it's typically assumed that you're talking about yourself, while if you ask a question without a subject, it's assumed to be the person you're talking to. So you can shorten your answers to simply いいえ、まだそうじしていません or simply まだしていません.

For はなす, the particle と is more suited for indicating the person you're talking "with" (せんせいとはなしました). に can be used when you're asking someone a question (せんせいにききます).

If someone asks a question with もう (e.g. "have you already done your homework"), you can answer in the affirmative (yes, I have *already* done it: *もう*しました) or in the negative (I haven't done it *yet*: *まだ*していません). Just like in English, the words in stars are different depending on whether you answer yes or no.

Thanks very much for the reply. I'm guessing that the different verb form was referring to the " ~ていまでん and しました formats after all then?

Also, would it be possible to use まだ in a question? You say まだ means ' yet ' so would a question like: " have you done your homework yet? " be possible or is it negated by the " already " that もう means? Kinda means the same thing.

I missed that they were specifically talking about different verb forms in affirmative/negative answers, but yes, it's clearly what you said.

まだ in a negative sentence means "yet" (so that the whole sentence becomes "...not yet ..."), but it can also be used in a positive statement or question, in which case it means "still". So you could ask: まだべんきょうしていますか, "are you still studying?".

"Have you done your homework yet" is just another way of saying "have you already done your homework", so this would again use もう.

Thanks for clarifying

3)
と has a sense of "mutually", so せんせいとはなします means "to talk with the teacher", as already pointed out, whereas に is for "unilaterally", thus せんせいにはなします can be used in a context something like "to tell/report something to the teacher".