asa ha zikokuhyou wo mite kara, sihatu no densya ni noru.

朝は sets morning up as the topic or time frame: As for the morning... or more naturally, In the morning...

In Japanese, a time word can be followed by は when the speaker wants to frame the whole statement around that time. It can also add a slight contrast, depending on context, such as:

• 朝は ... = in the morning / as for mornings
• possibly implying (at least in the morning...)

So 朝は時刻表を見てから、始発の電車に乗る。 feels like:

• In the morning, I check the timetable and then take the first train.

Without は, 朝 could still work as a time expression, but 朝は makes the time setting more explicit as the topic.

The particle を marks the direct object of the verb.

Here:

• 時刻表 = timetable
• 見る = to look at / to see

So:

• 時刻表を見る = to look at the timetable

In 時刻表を見てから, the object-marker を is still doing the same job:

• look at the timetable, and then...

見て is the て-form of 見る.

The て-form has many uses, and here it appears in the pattern:

• Vてから = after doing V

So:

• 見てから = after looking
• 時刻表を見てから = after looking at the timetable

This is why you do not see 見るから here. The grammar pattern specifically requires the て-form:

• 食べてから = after eating
• 行ってから = after going
• 見てから = after looking

〜てから means after doing ... and often implies that the second action happens only once the first one is completed.

So in this sentence:

• 時刻表を見てから、始発の電車に乗る。
• After looking at the timetable, [I] take the first train.

It is similar to and then, but a bit more specific than simple sequencing. It emphasizes order:

1. first, check the timetable
2. after that, take the train

So 〜てから is often best understood as:

• after ...
• once ...
• ... and only then ...

始発 means first departure or first train of the day, depending on context.

In this sentence:

• 始発の電車 = the first train

More literally:

• 始発 = first departure
• 電車 = train
• 始発の電車 = the train that is the first departure

This word is very commonly used in transportation contexts:

• 始発電車 = first train
• 始発駅 = the station where a line starts

The particle の connects nouns and often works a bit like 's or of in English.

Here:

• 始発 = first departure
• 電車 = train

So:

• 始発の電車 = the first train
  literally something like the train of the first departure

Japanese often uses noun + の + noun where English would use an adjective-like translation:

• 日本の会社 = a Japanese company
• 駅の前 = in front of the station
• 始発の電車 = the first train

The verb 乗る takes に to mark what you get on or ride.

So:

• 電車に乗る = to get on a train / ride a train

This is different from English, where train feels like a direct object. In Japanese, with 乗る, the vehicle is usually marked by に:

• バスに乗る = ride the bus
• 自転車に乗る = ride a bicycle
• 飛行機に乗る = board a plane

So に here marks the target/destination-like thing that you board.

The dictionary form 乗る is the plain form. Japanese sentences can end in either:

• plain style: 乗る
• polite style: 乗ります

This sentence is written in plain style, which is common in:

• casual speech
• textbook example sentences
• diary-like writing
• explanations of grammar

A polite version would be:

• 朝は時刻表を見てから、始発の電車に乗ります。

The meaning is basically the same; the difference is level of politeness.

Japanese non-past forms like 乗る can express several things depending on context:

• a habitual action: I take
• a future action: I will take
• a general statement: I take / one takes

In this sentence, it could naturally be understood as either:

• a routine: In the morning, I check the timetable and then take the first train
• a planned future action: In the morning, I’ll check the timetable and then take the first train

Context tells you which one is meant. Japanese often leaves this flexible.

Japanese very often omits the subject when it is understood from context.

So:

• 朝は時刻表を見てから、始発の電車に乗る。

does not explicitly say:

• I
• he
• she
• they

But in many contexts, the listener can infer it. In textbook translations, it is often given as I because that is the most neutral guess.

This is extremely normal in Japanese. A more explicit version could be:

• 私は朝、時刻表を見てから、始発の電車に乗る。

But Japanese usually prefers to omit 私は if it is already clear.

Yes. Japanese often puts the topic or time setting early in the sentence.

By starting with 朝は, the speaker frames everything that follows within the morning. It helps organize the sentence naturally:

• 朝は = as for the morning / in the morning
• then what happens during that time:
  • 時刻表を見てから
  • 始発の電車に乗る

This is very typical Japanese word order:

1. topic/time frame
2. object or details
3. verb at the end

The comma in:

• 朝は時刻表を見てから、始発の電車に乗る。

helps separate the two parts of the sentence and makes it easier to read.

It is not always strictly required, but it is very natural in writing, especially when the first part is a longer setup:

• after looking at the timetable,
• [I] take the first train

Japanese commas are often used more flexibly than English commas. Writers may include or omit them depending on style and readability.

No. Standard Japanese is normally written without spaces between words.

So this sentence would usually appear as:

• 朝は時刻表を見てから、始発の電車に乗る。

The spaced version is often used only in learning materials to help beginners see the word boundaries.

Yes, depending on the nuance.

For example:

• 朝、時刻表を見てから、始発の電車に乗る。
  = In the morning, I look at the timetable and then take the first train.
  This is a neutral time expression without making morning the topic.

• 朝に is much less natural in a sentence like this. For general time expressions such as today, tomorrow, morning, evening, Japanese often uses no particle or uses は rather than に.

So in this sentence:

• 朝は = very natural
• 朝 = also natural
• 朝に = not the usual choice here

Yes, very easily.

Because the sentence uses plain non-past verbs and has no specific date or one-time marker, it can sound like a routine:

• In the morning, I check the timetable and then take the first train.

That sounds like a habitual pattern. But if spoken in the right context, it could also describe a future plan. Japanese often leaves that distinction to context rather than verb tense alone.