謙譲語 (Kenjougo) Beginner question


Good day,

I'm currently studying Japanese in a school here in Tokyo and I'm on my 5th
month already here. Problem is that the lesson here is sometimes too fast,
which is why I need to use other resources such as this website to learn. Our
lesson is currently about `謙譲語`. I saw in the vocabulary that `いたします` is the
humble equivalent of `する`, but I'm having trouble figuring out when to use it.

In the Minna no Nihongo Book 2nd Ed. that we're currently using,

[code]

    1st and 2nd verb group
    お＋します 
    
    Example
    よていをお知らせします
    かばんをお持ちします
    
    3rd verb group
    ご＋します
    ご案内します
    中止の場合はご連絡します
    
[/code]

I was wondering where `いたします` fits in the actual lesson, as I cannot find the
actual usage in the book, all I know is that I should use it on some events
like when entering a room `失礼いたします`, or `お願いいたします` but I need some explanation
to further understand it's usages. Any help is much appreciated, thank you!




謙譲語 は humble form。

It is used while speaking to the superior by humble ourself.

Instead of giving respect to the superior by humble ourself it will
automatically give respect to the superior.

しますはいたします。

勉強します － 勉強いたします。

お願いします - お願いいたします。

目上の人と話すとき使います。

