一緒に行きましょうか。
- Shall we go together?

一緒に行きましょうか。 meaning: Shall we go together?

The sentence 一緒に行きましょうか is a simple and common Japanese sentence, structured around a verb in the polite form. ⚫︎ The basic structure is: Subject (implied) + 一緒（いっしょ） + verb in polite form + か. ⚫︎ か is the question particle, placed at the end of the sentence to indicate a question. Without か, the sentence would be a statement. ⚫︎ The subject (e.g., "we" or "you and I") is often omitted in Japanese when it's clear from the context.

The verb 行く（いく） (to go) is conjugated into the polite form, and then followed by ましょうか. ⚫︎ 行く (to go) becomes 行き（いき） + ましょうか. * 行き（いき） is the stem of the verb. * ましょう is the "let's" or "shall we" form, indicating a suggestion or invitation. * か as mentioned above, is the question particle. ⚫︎ This form, -ましょうか, softens the suggestion, making it more polite and inviting. ⚫︎ Consider the conjugation: * 行く (to go) --> 行きます（いきます）(go, polite present/future) --> 行きましょう（いきましょう）(Let's go!) --> 行きましょうか（いきましょうか）(Shall we go?)

The word 一緒（いっしょ） (together) modifies the verb, indicating how the action is performed. ⚫︎ In other cases, the particle と is used to connect two nouns. ⚫︎ Here, 一緒 functions as an adverb and modifies the verb 行きます, indicating that the action of going will be done "together." The particle と is not needed in this specific sentence.

一緒（いっしょ） means "together." ⚫︎ Adding the particle に transforms it into the adverbial phrase 一緒に（いっしょに）, which is the full expression for "together." ⚫︎ It's a fixed expression, meaning it's a commonly used phrase with a specific meaning. You can't replace the に without changing the meaning or grammatical correctness.

The verb is in the polite form, using the -ます form. ⚫︎ This is a fundamental aspect of N5 grammar, used to show respect to the listener. ⚫︎ 行きます (ikimasu) is the polite present/future form of 行く (iku - to go). ⚫︎ The polite form makes the sentence sound more respectful than the plain form (e.g. 行く).