בגלל הגשם אני נוסעת באוטובוס, לא באופניים.

בגלל means because of or due to. It is usually followed by a noun phrase, as in בגלל הגשם = because of the rain.

A useful contrast:

• בגלל הגשם = because of the rain
• כי יורד גשם = because it is raining

So in this sentence, בגלל introduces the reason.

הגשם means the rain. In Hebrew, weather in a specific situation is often expressed with the definite article, so בגלל הגשם sounds natural for because of the rain.

Just בגלל גשם would usually sound less natural here, unless you mean something more general or indefinite.

Because the speaker is feminine singular.

In the present tense, Hebrew verbs agree with gender and number:

• אני נוסע = I travel / I am going, said by a male speaker
• אני נוסעת = I travel / I am going, said by a female speaker

So נוסעת tells you the speaker is female.

The dictionary form is the verb לנסוע = to travel / to go by vehicle.

Related forms:

• נוסע = traveling, masculine singular
• נוסעת = traveling, feminine singular
• נוסעים = traveling, masculine plural
• נוסעות = traveling, feminine plural

So נוסעת is the feminine singular present-tense form of לנסוע.

Hebrew does not use a separate auxiliary like English am in this kind of sentence.

So:

• אני נוסעת can mean I travel, I am traveling, or I’m going
• the exact English translation depends on context

That is very normal in Hebrew. The single verb form covers what English often expresses with am + -ing.

Here נוסעת means something like go, travel, or ride by vehicle.

With transportation words after it, it often means to go by a certain method:

• נוסעת באוטובוס = go by bus / am taking the bus
• נוסעת ברכבת = go by train
• נוסעת במכונית = go by car

So it is broader than one single English verb.

The ב־ is a preposition attached directly to the noun. It often means in, on, or by, depending on context.

With means of transportation, ב־ is commonly used for by:

• באוטובוס = by bus / on the bus
• באופניים = by bicycle / on a bicycle

So Hebrew uses ב־ where English often uses by.

In this sentence, it means by bus.

Hebrew often uses the same form for both ideas, and context tells you which meaning is intended. Here the sentence contrasts two means of transportation:

• באוטובוס
• לא באופניים

So the meaning is clearly by bus, not by bicycle.

לא is the normal Hebrew word for negating verbs and many whole statements.

So:

• אני נוסעת באוטובוס = I go by bus
• אני לא נוסעת באופניים = I do not go by bicycle

In this sentence, לא באופניים is a shortened contrast: not by bicycle.

אופניים is one of those Hebrew nouns that has a plural-looking form but often refers to a single object in English.

It is treated as a plural form in Hebrew, historically like something with two parts. Similar ideas exist in English with words like scissors or pants.

So:

• אופניים = bicycle / bike / bicycle wheels, depending on context

After a preposition, you get:

• באופניים = by bicycle / on a bike

Because Hebrew, like English, often omits repeated words when the meaning is obvious.

Full version:

• בגלל הגשם אני נוסעת באוטובוס, לא נוסעת באופניים

Natural shorter version:

• בגלל הגשם אני נוסעת באוטובוס, לא באופניים

The second version sounds smoother and is completely normal.

It can be changed. Hebrew word order is fairly flexible, especially with adverbial phrases like בגלל הגשם.

For example, all of these are possible:

• בגלל הגשם אני נוסעת באוטובוס, לא באופניים.
• אני נוסעת באוטובוס בגלל הגשם, לא באופניים.
• אני נוסעת בגלל הגשם באוטובוס, לא באופניים.

The first version is very natural because it puts the reason first for emphasis: Because of the rain...

In the present tense, Hebrew often keeps the subject pronoun because the verb form by itself does not always clearly show the person.

So:

• נוסעת tells you feminine singular, but not by itself whether it means I, you, or she
• אני נוסעת clearly means I am going / I go

That is why אני is important here.