tomodati ha syasindate, syuunoukago, kabekakedana wo ugokasite bakari iru.

は marks 友達 as the topic of the sentence: As for my/the friend...

It does not strongly focus friend as new information; it sets up what the sentence is about. A very natural English translation may use my friend, but Japanese often leaves that kind of possessive unstated if it is obvious from context.

Yes. 友達 can be singular or plural depending on context. Japanese nouns usually do not change form for number.

So this sentence could mean:

• My friend keeps moving...
• My friends keep moving...

If the speaker really wanted to make the plural explicit, they might say 友達たち, but that is often unnecessary.

The nouns 写真立て、収納かご、壁掛け棚 are being listed together as one group, and the single を marks that whole group as the direct object of 動かして.

So the structure is basically:

[photo frame, storage basket, wall shelf] を 動かしてばかりいる

This is very normal in Japanese. You do not need to put を after each item.

Japanese can list items in several ways. Using commas alone is very common in writing:

A、B、Cを...

You could also say:

AとBとCを...

That sounds a little more explicitly like A and B and C.

If you used や, it would sound more like A, B, C, and things like that, so it would be less exact.

動かして is the て-form of 動かす, which means to move something.

The sentence uses the grammar pattern 〜てばかりいる, so the verb must appear in て-form:

• 動かす → dictionary form
• 動かして → て-form

Also, 動かす is the correct verb because the friend is actively moving objects.
Compare:

• 動かす = to move something
• 動く = to move, to move on its own

〜てばかりいる means to keep doing X, to do nothing but X, or to be always doing X.

So:

動かしてばかりいる = keeps moving them around = is always moving them around = does nothing but move them around

It usually suggests repetition and often a sense that the behavior is excessive.

Often, yes—at least slightly.

In this pattern, ばかり often implies that the speaker feels the action happens too much, over and over, or instead of doing other things. It can sound mildly critical, annoyed, or exasperated.

So this sentence does not just describe the action neutrally; it often suggests something like:

My friend keeps moving the photo frame, storage basket, and wall shelf around all the time.

It is the same word, but this is a different grammar use.

ばかり has several meanings depending on the pattern.

For example:

• 食べたばかり = just ate
• 食べてばかりいる = keeps eating / does nothing but eat

In your sentence, it is the second pattern: て-form + ばかりいる, not past form + ばかり.

だけ is usually a more neutral only.

ばかり often adds a nuance of too much, nothing but, or biased toward one thing.

So:

• 〜だけ = only, just
• 〜ばかり = nothing but, always, excessively focused on

That is why 動かしてばかりいる feels more like keeps moving them around all the time, not just a plain factual only moves them.

Here, いる is working as part of the grammar pattern, not as the main verb meaning to exist.

The base expression 〜ている often shows an ongoing or repeated action.
When ばかり is added, 〜てばかりいる means to be always doing...

So in this sentence, いる helps build the idea of a continuing, repeated habit.

Yes, it is in plain style because it ends with いる.

A polite version would be:

友達は写真立て、収納かご、壁掛け棚を動かしてばかりいます。

Plain style is very common in casual conversation, narration, diaries, and many textbook example sentences.

No. Standard Japanese normally does not use spaces between words.

This sentence would usually be written as:

友達は写真立て、収納かご、壁掛け棚を動かしてばかりいる。

The spaces in your version are probably there only to help learners see the parts more clearly.

Yes. They are compound nouns.

Japanese often combines words directly into one noun without adding anything like of or 's or even の.

For example:

• 写真立て = photo frame / photo stand
• 収納かご = storage basket
• 壁掛け棚 = wall-mounted shelf

That is very normal in Japanese vocabulary.