haha ha maiasa sitizi ni watasi wo okosimasu.

は marks the topic of the sentence.

So 母は means as for my mother... or my mother... in natural English.

In this sentence, 母 is the person the sentence is about, and the rest of the sentence tells you what she does:

• 母は = as for my mother
• 毎朝七時に私を起こします = wakes me up every morning at seven o’clock

Japanese often uses は where English would simply use the subject position.

母 is the usual word for my mother when talking to other people.

A very common pattern is:

• 母 = my mother, when referring to her to someone else
• お母さん = mom / mother, when speaking directly to her, or sometimes when referring to someone else’s mother

So in a sentence like this, 母 is the natural choice.

毎朝 means every morning.

Words like 毎日 (every day), 毎週 (every week), and 毎朝 often work as time expressions by themselves, so they do not need a particle.

That is why you get:

• 毎朝 = every morning

not

• 毎朝に

So the sentence naturally says every morning, at seven o’clock...

に marks a specific point in time.

Here, 七時に means at seven o’clock.

This is very common with exact times:

• 六時に = at six
• 七時に = at seven
• 八時に = at eight

So:

• 毎朝 = every morning
• 七時に = at seven o’clock

Together: every morning at seven o’clock

Sometimes in casual speech, particles get dropped, but for learners, it is best to think:

• with a specific clock time, に is normally used

So 七時に is the standard form.

By contrast, some broader time words often do not take に, such as:

• 今日 = today
• 明日 = tomorrow
• 毎朝 = every morning

That is why this sentence has:

• 毎朝 (no particle)
• 七時に (with に)

を marks the direct object of the verb, and that object can absolutely be a person.

The verb 起こします means wake (someone) up, so the person being woken is the direct object.

That is why:

• 私を起こします = wakes me up

Here:

• 母は = my mother (topic / doer)
• 私を = me (the person affected by the action)
• 起こします = wakes up

This is a very important pair:

• 起きます = to get up / wake up
• 起こします = to wake someone up

So:

• 私は七時に起きます。 = I get up at seven.
• 母は七時に私を起こします。 = My mother wakes me up at seven.

In other words:

• 起きます is about yourself waking up
• 起こします is about causing someone else to wake up

Yes, 起こします is the polite -ます form of the verb.

In Japanese, this form can express:

• a present action
• a future action
• a habitual/repeated action

Here it describes a habitual action, so it means something like:

• My mother wakes me up every morning at seven.

It does not mean she is waking me up right now. The time expression 毎朝 makes it clear that this is a repeated routine.

Because 私 is not the topic here and not the main subject of the verb.

The sentence is about what my mother does, so 母 is marked with は.

The action is waking someone up, and I am the person receiving that action, so 私 takes を.

Compare:

• 私は毎朝七時に起きます。 = I get up every morning at seven.
• 母は毎朝七時に私を起こします。 = My mother wakes me up every morning at seven.

In the first sentence, I am the one doing the action, so 私は makes sense. In the second, my mother does the action, and I receive it, so 私を is correct.

Japanese word order is more flexible than English, as long as the particles stay correct.

This sentence could also appear as:

• 母は私を毎朝七時に起こします。
• 毎朝七時に母は私を起こします。

All of these are understandable because the particles show each word’s role:

• は = topic
• に = time marker
• を = direct object

That said, the original order sounds very natural and easy to follow.

Japanese often leaves out information that is obvious from context.

Here, 母 by itself normally means my mother when I am talking about my own family to someone else. Also, 私 is enough for me / I depending on the particle used.

So Japanese does not need separate words like English does for every relationship if the meaning is already clear from context and word choice.

The plain version would be:

• 母は毎朝七時に私を起こす。

The difference is:

• 起こします = polite
• 起こす = plain / dictionary form

Both mean the same basic thing, but 起こします is more appropriate in normal polite speech, in textbooks, and when talking respectfully.