現在完了形: 'yet'を文末に使う
present perfect negatives and questions for expected but unfulfilled actions.
Grammar Rule in 30 Seconds
Use 'yet' at the end of sentences to talk about things you expect to happen soon but haven't happened.
- Use 'yet' at the end of negative sentences: 'I haven't eaten yet.'
- Use 'yet' at the end of questions: 'Have you finished yet?'
- Never use 'yet' in affirmative (positive) sentences; use 'already' instead.
Overview
yet (まだ)届いてないだけなんだよね。この yet という小さな単語は、英文法における究極の「待合室」みたいなもの。文の一番最後にちょこんと座っていて、「もうすぐ何かが起こるはず」という期待を合図しているんだ。これがないと、文がなんだか未完成に感じちゃう。逆にこれを使えば、ネイティブスピーカーみたいに自然に響くよ。Yet は、現在完了形 (Present Perfect tense) と一緒に使われる「時の副詞」だね。「今現在に至るまで、まだ起こっていないこと」を話す時に使うんだ。あと、「期待していたことがもう起こったか」を尋ねる時にも役立つよ。これは過去と「今この瞬間」をつなぐ架け橋みたいなもので、そのアクションが未来に起こりそうだというニュアンスを含んでいるんだ。YouTube動画の「ロード中... (loading...)」の文法版だと思ってくれればいい。会話に「まだかなー」という期待や焦りの気持ちをプラスしてくれるんだ。B1レベルにおいて、この yet をマスターするのは大きなマイルストーンになるよ。単純な過去形の文から卒業して、進行中の状況や、これから片付けるタスクについて話せるようになるからね。How This Grammar Works
yet は文末というスポットライトが大好きなんだ。ほぼ間違いなく、文の一番最後に見つかるはずだよ。具体的には2種類の文でよく顔を出す。1つ目は「否定文」、2つ目は「疑問文」だね。肯定文は苦手みたい。「I have eaten yet」なんて言ったら、みんな困惑した顔をするはず。これは聞き手への合図として機能して、「状況が変わるのをまだ待ってるんだ」と伝えているんだ。スマホでメッセージを確認するようなものだね。yet(まだ)受け取ってないけど、画面を見続けている状態さ。Formation Pattern
I, You, We, They, He, She, It) から始める。
have か has を加える。三人称単数の場合は has を使おう。
not を足す。普通は短縮形の haven't や hasn't を使うね。
seen, done, gone) を使う。
yet を置く。
Subject + haven't/hasn't + past participle + yet.
Have/Has + subject + past participle + yet?
Conjugation Table
| Form | Example | Translation | ||
|---|---|---|---|---|
| Negative (I/You/We/They) | I haven't seen the finale yet. |
私はまだその{最終回 | さいしゅうかい}を{見 | み}ていない。 |
| Negative (He/She/It) | She hasn't replied to my DM yet. |
彼女はまだ私のDMに{返信 | へんしん}していない。 | |
| Question (I/You/We/They) | Have you finished the level yet? |
もうそのレベルをクリアした? | ||
| Question (He/She/It) | Has the bus arrived yet? |
バスはもう{到着 | とうちゃく}した? |
When To Use It
yet を使おう。家事や仕事のタスクについて話すのにピッタリだね。人やイベントを待っている時にも使えるよ。SNSのコンテキストでも大活躍。「そのTikTok、yet (もう) 投稿した?」もししてないなら、フォロワーが退屈しちゃうかもね。ちょっとしたプレッシャーや緊急性を感じている時にも使う。Zoomでの就職面接でもよくあるよ。「yet (もう) このソフトウェアを使ったことはありますか?」旅行Vlogの王様でもあるね。「yet (まだ) 山頂には着いてないけど、この景色を見てよ!」単純な「いいえ (no)」を、「今のところはまだ (not for now)」というニュアンスに変えてくれるんだ。Politeness Levels
Social Context | Sentence | Tone
Casual (Texting a friend) | Haven't finished the show yet. | すごくカジュアル。主語を省略してるね。
Neutral (Standard conversation) | I haven't finished my homework yet. | フレンドリーで明確。
Formal (Job interview/Email) | We have not received the documents yet. | 真面目なトーン。短縮形は使わない。
Memory Trick
yet を Yelling End Tool (文末で叫ぶツール)だと覚えておこう。文の End (最後)に居座って、まだ何かを待っているんだと Yells (叫んで)いるわけ。ドアのそばに座っている犬みたいなものだね。yet (まだ)散歩には行ってないけど、準備は万端って感じ。
Common Mistakes
yet を入れちゃダメだよ。「I have seen the movie yet」とは言わない。良いニュース(もう完了したこと)には代わりに already を使おう。もう一つの大きな間違いは、yet を真ん中に置くこと。「I haven't yet seen it」は可能だけど、すごく堅苦しいんだ。B1英語レベルなら、安全策として文末に置いておこう。あと、yet と still を混同しないこと。Still は普通、動詞の前に来るけど、Yet の居場所はゴールライン(文末)だ。もし置く場所を間違えたら、ロボットみたいに聞こえちゃうかも。ちょっと壊れたロボットにね。そんなロボットにはならないで。Contrast With Similar Patterns
Yet vs Already: already は予想より早く起きたことに使う。yet はまだ起きていないけど、これから起きることに使う。Yet vs Still: Still は状況が望んでいるよりも長く続いていることを強調する。yet は完了を期待していることに焦点を当てる。Yet vs Just: Just は1分前に起きたことに使う。yet は今現在欠けていることに使う。Real Conversations
Alex
yet?Blake
yet. Is it good?Sarah
yet?Tom
yet. I have checked the portal three times today.Progressive Practice
今日やる必要のあるタスクを特定しよう(例:「牛乳を買う」)。
それを否定文に変えてみよう:「I haven't bought milk yet.」(私はまだ牛乳を買っていない)。
友達にそれをやったか聞いてみよう:「Have you bought milk yet?」(もう牛乳買った?)。
理由を付け加えてみよう:「I haven't bought milk yet because I'm lazy.」(怠け者だから、まだ牛乳を買っていない)。
Quick FAQ
yet を過去形 (Past Simple) で使ってもいい?
アメリカ英語ならOK。でも世界的には現在完了形の方が一般的だね。
yet は文末だけ?
君のレベルなら、イエス。自然な流れを作るために、文末に置くことに集中しよう。
yet は主語によって変化する?
いいえ、yet は誰に対してもまったく同じまま。簡単でしょ?
ポジティブなサプライズに使ってもいい?
だめだめ、そういう「ワオ!」って瞬間には yet じゃなくて already を使って。
Not yet だけで完全な文になる?
なるよ!多くの質問に対する、完璧で短い答えだね。
Present Perfect + Yet Structure
| Type | Subject | Auxiliary | Past Participle | Object/Adverb | End Particle |
|---|---|---|---|---|---|
|
Negative
|
I / You / We / They
|
haven't
|
finished
|
the work
|
yet
|
|
Negative
|
He / She / It
|
hasn't
|
started
|
the car
|
yet
|
|
Question
|
Have
|
you
|
seen
|
the movie
|
yet?
|
|
Question
|
Has
|
she
|
called
|
the office
|
yet?
|
Common Contractions
| Full Form | Contraction | Usage |
|---|---|---|
|
have not
|
haven't
|
Informal/Neutral speech
|
|
has not
|
hasn't
|
Informal/Neutral speech
|
Meanings
In the Present Perfect, 'yet' is used to refer to a time which started in the past and continues up to the present. It specifically highlights that an action is expected to happen in the future.
Negative Expectation
To indicate that something has not happened up to this moment, but you think it will happen soon.
“I haven't seen that movie yet.”
“She hasn't called me back yet.”
Status Inquiry
To ask if an expected action has been completed by the time of speaking.
“Have you finished your homework yet?”
“Has the mail come yet?”
Emphasis on Delay
In formal contexts, it can emphasize that a long-awaited event still hasn't occurred.
“The board has not yet reached a decision.”
“A cure for the disease has not been discovered yet.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Negative (I/You/We/They)
|
haven't + V3 + yet
|
I haven't seen him yet.
|
|
Negative (He/She/It)
|
hasn't + V3 + yet
|
She hasn't arrived yet.
|
|
Question (I/You/We/They)
|
Have ... + V3 + yet?
|
Have you finished yet?
|
|
Question (He/She/It)
|
Has ... + V3 + yet?
|
Has it stopped raining yet?
|
|
Short Answer (Yes)
|
Yes, I have. / Yes, she has.
|
Note: No 'yet' in positive answers.
|
|
Short Answer (No)
|
No, not yet.
|
Very common short response.
|
フォーマル度スペクトル
Have you completed the assignment yet? (Work/School)
Have you finished your work yet? (Work/School)
Done yet? (Work/School)
You through with that yet? (Work/School)
The 'Yet' Expectation Bridge
Negative
- Unfinished I haven't done it yet.
Question
- Checking Have you done it yet?
Yet vs. Already
Should I use 'Yet'?
Is the sentence positive?
Is it a question or negative?
レベル別の例文
I haven't eaten yet.
I haven't eaten yet.
Has he come yet?
Has he come yet?
We haven't started yet.
We haven't started yet.
Have you seen it yet?
Have you seen it yet?
She hasn't finished her homework yet.
She hasn't finished her homework yet.
Have they arrived at the station yet?
Have they arrived at the station yet?
I haven't bought the tickets yet.
I haven't bought the tickets yet.
Has the movie started yet?
Has the movie started yet?
I haven't received a reply to my email yet.
I haven't received a reply to my email yet.
Have you decided where to go on holiday yet?
Have you decided where to go on holiday yet?
The doctor hasn't seen the patient yet.
The doctor hasn't seen the patient yet.
We haven't found a solution to the problem yet.
We haven't found a solution to the problem yet.
The government hasn't passed the new law yet.
The government hasn't passed the new law yet.
Have you managed to fix the bug in the software yet?
Have you managed to fix the bug in the software yet?
They haven't officially announced the winner yet.
They haven't officially announced the winner yet.
Has the company released its annual report yet?
Has the company released its annual report yet?
The full implications of the study haven't been realized yet.
The full implications of the study haven't been realized yet.
Have the negotiators reached a consensus yet?
Have the negotiators reached a consensus yet?
We haven't quite mastered the art of negotiation yet.
We haven't quite mastered the art of negotiation yet.
Has the dust settled on the recent scandal yet?
Has the dust settled on the recent scandal yet?
The definitive biography of the artist hasn't been written yet.
The definitive biography of the artist hasn't been written yet.
Have the long-term effects of the policy been fully evaluated yet?
Have the long-term effects of the policy been fully evaluated yet?
The team hasn't reconciled the conflicting data sets yet.
The team hasn't reconciled the conflicting data sets yet.
Has the philosophical debate over AI consciousness reached a stalemate yet?
Has the philosophical debate over AI consciousness reached a stalemate yet?
間違えやすい
Learners use 'yet' in positive sentences because their native language uses the same word for both.
Both imply an unfinished action, but 'still' emphasizes the duration and 'yet' emphasizes the expectation.
'Just' is for very recent completions, while 'yet' is for non-completions.
よくある間違い
I have finished yet.
I have already finished.
I not finished yet.
I haven't finished yet.
Have you finish yet?
Have you finished yet?
I haven't yet eaten.
I haven't eaten yet.
Did you finish yet?
Have you finished yet?
She hasn't yet arrived.
She hasn't arrived yet.
I haven't seen him already.
I haven't seen him yet.
I haven't still finished.
I haven't finished yet.
Has he yet to arrive?
Has he arrived yet?
I haven't never seen it yet.
I haven't seen it yet.
The results haven't been yet published.
The results haven't been published yet.
文型パターン
I haven't ___ yet.
Has the ___ ___ yet?
We haven't quite ___ how to ___ yet.
Have you ___ whether you're ___ yet?
Real World Usage
You there yet?
I haven't had the opportunity to lead a team yet, but I am eager to learn.
Has our food come yet?
The gate hasn't opened yet.
Haven't posted the vlog yet! Coming soon!
Have you taken the medicine yet?
The 'Already' Swap
American vs British
Polite Refusal
Impatience
Smart Tips
Always add 'yet' to the end to sound more helpful and positive.
Be careful! At the start of a sentence, 'Yet' usually means 'But' or 'However'.
Use 'yet' for every item that doesn't have a checkmark.
Use 'have yet to' + base verb instead of 'haven't ... yet'.
発音
The 't' in Yet
In American English, the 't' in 'yet' is often a 'stop t' or a 'flap t' if followed by a vowel, but at the end of a sentence, it is often unreleased.
Contraction Stress
In the sentence 'I haven't finished yet', the stress usually falls on 'finished' and 'yet'.
Rising Intonation for Questions
Have you eaten yet? ↗
Conveys a genuine question or curiosity.
Falling Intonation for Negatives
I haven't seen it yet. ↘
Conveys a statement of fact.
暗記しよう
記憶術
YET stands for 'You Expect This'. If you expect it to happen, use yet!
視覚的連想
Imagine a bridge that is missing the last few bricks. You are standing on the bridge looking at the other side. The missing bricks are 'yet'—they haven't been placed, but they will be soon.
Rhyme
If it's not done and you're waiting for the net, just put at the end the word 'yet'!
Story
Bob is a lazy builder. His boss asks, 'Have you finished the wall yet?' Bob sighs and says, 'I haven't even started yet!' The 'yet' shows the boss is waiting and Bob knows he has to do it eventually.
Word Web
チャレンジ
Look at your to-do list. Say out loud three things you haven't done yet using the Present Perfect.
文化メモ
British speakers are very strict about using the Present Perfect with 'yet'. Using the Past Simple ('Did you do it yet?') sounds very American to them.
In casual American speech, the Past Simple is frequently used with 'yet'. It is not considered 'wrong' in conversation, but the Present Perfect is preferred in writing.
Using 'yet' in a professional context shows that you are aware of a deadline or expectation. It sounds more proactive than a simple 'no'.
From Old English 'giet' or 'gyta', meaning 'at this time' or 'hitherto'.
会話のきっかけ
Have you traveled to any other countries yet?
Have you decided what you want to do this weekend yet?
Has the new season of your favorite show come out yet?
Have you ever tried skydiving? No? Have you thought about it yet?
日記のテーマ
よくある間違い
Test Yourself
I (not / finish) my coffee ___.
Has the mail arrived ___?
Find and fix the mistake:
She has already not called me yet.
They have already left.
A: Are you ready to go? B: No, I ___.
Select the grammatically perfect sentence.
Match each item on the left with its pair on the right:
homework / hasn't / finished / she / her / yet
Score: /8
練習問題
8 exercisesI (not / finish) my coffee ___.
Has the mail arrived ___?
Find and fix the mistake:
She has already not called me yet.
They have already left.
A: Are you ready to go? B: No, I ___.
Select the grammatically perfect sentence.
1. I've already eaten. 2. I haven't eaten yet.
homework / hasn't / finished / she / her / yet
Score: /8
Practice Bank
12 exercisesThe meeting ___ (start) yet, so we have time.
I yet haven't received the email.
Choose the correct sentence:
Translate into English: 'Eles ainda não chegaram em casa.'
Arrange these words into a sentence:
Match the sentence beginnings with their endings:
We haven't ___ (discuss) the plans yet.
Did you submit your application yet?
Choose the correct sentence:
Translate into English: 'Ainda não recebi a confirmação do pedido.'
Arrange these words into a sentence:
Match the questions with their answers:
Score: /12
よくある質問 (8)
Generally, no. In standard English, we use `already` for positive sentences. However, in very formal English, you might see `I have yet to...`, but this actually has a negative meaning (I haven't done it).
`Not yet` is neutral and focuses on the expectation. `Still not` often sounds more frustrated or surprised that something is taking so long. Example: 'I haven't finished yet' (Neutral) vs 'I still haven't finished!' (Frustrated).
It is not wrong in American English conversation. However, in British English and on international exams like the TOEFL or IELTS, you should use the Present Perfect: `Have you finished yet?`.
In 99% of cases, `yet` goes at the very end of the sentence or clause.
No, we don't usually use `yet` with the Present Continuous. We use `still` for ongoing actions. Example: 'I am still working' (not 'I am working yet').
It's a very common and polite way to say 'No, but it will happen soon.' It's much more natural than just saying 'No' when someone asks if you've finished something.
It doesn't change the verb's meaning, but it changes the *aspect* of the sentence, adding the feeling of 'up to now' and 'future expectation'.
Yes, it is very common in formal reports to indicate that data is not available or a decision hasn't been made. Example: 'The results have not been verified yet.'
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
todavía no / ya
Spanish 'ya' is more flexible in position than English 'yet'.
pas encore
French doesn't require a specific 'perfect' tense as strictly as British English does with 'yet'.
noch nicht
German word order often places 'nicht' at the end, but 'noch' earlier in the sentence.
mada (まだ) + negative
Japanese doesn't have a separate word for 'yet' vs 'still'; 'mada' covers both.
lam... ba'du (لم... بعدُ)
Arabic uses a specific jussive particle 'lam' for this past-negation.
hái méi (还没)
The position is completely different (before verb vs. end of sentence).
Learning Path
Prerequisites
Learn These First
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Learn English Tenses: The Present Perfect
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