neru mae ni sumaho o juudenshimasu.

direct object particle

Breakdown of neru mae ni sumaho o juudenshimasu.

• に: time particle
• スマホ: smartphone
• 前まえ: before

Questions & Answers about neru mae ni sumaho o juudenshimasu.

What does the particle に after 前 do? Is it required?

• 前 is a noun meaning “before (in time)” or “in front (in space).”
• に marks a point in time: “at the time before X,” so 寝る前に = “before sleeping.”
• In the grammar pattern V(dictionary form) + 前に, using に is standard and safest.
• You can drop に only when you use it as a sentence-initial time phrase with a pause: 寝る前、スマホを充電します。 This is stylistic; 寝る前に… is the neutral default.

Why is 寝る in dictionary form instead of the polite form 寝ます?

• When a verb modifies a noun like 前, it must be in plain form: V-辞書形 + 前に.
• The polite ます-form doesn’t modify nouns: 寝ます前に is ungrammatical.
• Examples: 食べる前に手を洗います, not 食べます前に.

What does を in スマホを do here?

• を marks the direct object of the verb.
• 充電する is transitive—you “charge” something—so the thing being charged takes を: スマホを充電します.
• Don’t use に for this meaning; スマホに充電する is incorrect for “charge the phone.”

Can I change the word order?