■ もう V-ましたか?
Meaning: “Have you already V-ed?” / “Have you V-ed yet?”
もう means “already” or “yet” depending on context.
Used to ask if an action has been completed, often when the action is expected.
Positive response: はい、V-ました (Yes, I did).
Negative response: いいえ、まだです (No, not yet).
■ V-たことが あります
Meaning: “Have done V (before)” / “Have the experience of V-ing”
Used to talk about past experiences.
Formed by attaching ことが あります to the タ-form of verbs.
To say you haven’t experienced something, use: V-たことが ないです or V-たことが ありません.
In casual speech, が is often omitted: V-たことあります.
Different from もうV-ましたか?, which assumes the action is expected.
■ V-に 行[い]きませんか?
Meaning: “Would you like to go (do something)?”
Vます + に + 行[い]きませんか?
Casual: V-に 行[い]かない?
Used to invite someone to go do something together.
Expresses the purpose of going using a verb phrase like 食[た]べに (to eat), 飲[の]みに (to drink), etc.
In casual speech, use the plain form: V-に 行[い]かない?
■ Nの 前[まえ]に、~ / Nの あと(で)、~
Meaning: “Before N, ~ / After N, ~”
Noun + の前[まえ]に、~
Noun + のあと(で)、~
Used to clearly show the sequence of actions.
Nの前[まえ]に、~ means the second action happens before N.
Nのあと(で)、~ means the second action happens after N.
で in あとで can often be omitted in conversation.
■ V-たいんですが…
Meaning: “I’d like to V, but… / I want to V (and I need help)…”
Used to politely express a desire and often leads into a request, suggestion, or asking for help.
A softer, more indirect way to bring up what you want to do.
Related to V-たいです, but adds んですが to introduce context or set up for further communication.
Common in situations where you want someone to respond, assist, or go with you.
Sentence may end with ~んですが… or continue into a full request.