watasi ha bouringubooru wo erabu.

は marks 私 as the topic of the sentence. It tells you what the sentence is about: as for me, ...

In this sentence:

• 私 は = as for me / I
• ボウリングボール を 選ぶ = choose a bowling ball

So は does not mean is or am. It is a particle showing the topic.

Also, even though it is written は, in this use it is pronounced wa, not ha.

を marks the direct object of the verb, meaning the thing that is being acted on.

Here:

• ボウリングボール = bowling ball
• を = marks it as the thing being chosen
• 選ぶ = to choose

So ボウリングボール を 選ぶ means choose a bowling ball.

In other words, を is doing the job that English often does with word order.

Japanese sentences often place the verb at the end. That is one of the most basic word-order patterns in Japanese.

So this sentence follows a common structure:

• topic + object + verb

Here that becomes:

• 私 は = I / as for me
• ボウリングボール を = a bowling ball
• 選ぶ = choose

Even though the English order is different, the Japanese order is completely normal.

選ぶ is the dictionary form (plain form) of the verb.

This form is commonly used in:

• dictionary entries
• casual speech
• textbook example sentences
• statements without special politeness marking

A more polite version would be:

• 私はボウリングボールを選びます。

Both mean the same basic thing, but 選びます sounds more polite.

Yes, very often.

Japanese frequently omits subjects or topics when they are already clear from context. So in a real conversation, someone might simply say:

• ボウリングボールを選ぶ。

and the listener may understand that the speaker means I choose a bowling ball or I’ll choose a bowling ball, depending on context.

Including 私 makes the sentence more explicit. In many situations, though, it would sound unnecessary unless you want contrast or emphasis.

Not always. 私 is a common and neutral way to say I, but Japanese has several first-person words, and the best choice depends on formality, gender expression, personality, and situation.

For example:

• 私（わたし） = polite/neutral common I
• わたくし = more formal
• 僕（ぼく） = common for many males, often softer
• 俺（おれ） = more casual, rougher, masculine

So 私 is a safe and standard choice for learners, especially in neutral or polite contexts.

Katakana is commonly used for:

• foreign loanwords
• foreign names
• some onomatopoeia
• emphasis in certain cases

ボウリングボール is a loanword based on English bowling ball, so katakana is the expected script.

Many sports-related words in Japanese are borrowed from English and written this way.

Sometimes yes, if the context makes it obvious.

ボール just means ball, so it is less specific.
ボウリングボール clearly means bowling ball.

If you are already in a bowling alley or talking only about bowling, ボール may be enough. But if you want to be precise, ボウリングボール is clearer.

選ぶ means to choose, to select, or to pick.

It is used when choosing from options. For example, you might choose:

• a bowling ball
• a color
• a course
• a candidate

So in this sentence, it suggests selecting one bowling ball from several possible ones.

The plain non-past form 選ぶ can mean either present or future, depending on context.

So this sentence could mean things like:

• I choose a bowling ball.
• I will choose a bowling ball.

Japanese non-past forms often cover both meanings. Context tells you which one is intended.

Yes. The spaces are probably there just to help learners see the parts clearly.

Normally, Japanese is written without spaces:

• 私はボウリングボールを選ぶ。

So the spaced version is educational formatting, not standard everyday writing.