英語で「keffer」はどう発音する？
ˈkɛfər
KE·fər
第1強勢： KE
実際の動画クリップの中でネイティブが文脈に合わせて「keffer」を発音するのを聴く
Linguistic Pronunciation Masterclass: “keffer”
Phonetic mechanics, syllable architecture, and conversational cadence
Syllable Architecture & Stress Distribution
KE
Elevated pitch, sustained vowel length, and full acoustic clarity.
fər
Neutral schwa (⁄ə⁄): relaxed jaw, brief unstressed breath.
Primary emphasis falls on the first syllable ("KE"). Raise your pitch and sustain the vowel length on this syllable while relaxing the surrounding syllables.
Common Pronunciation Traps & Learner Mistakes
The Trap: Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels.
How Native Speakers Say It: Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).
Connected Speech & Natural Conversational Flow
When "keffer" is followed by a word starting with a vowel, glide the final consonant into the opening vowel (e.g. "keffer is" sounds like "keffer-iz").
In natural sentences, avoid over-stressing "keffer" unless it conveys the core contrast or focal point of your message.
Authentic Spoken Quotes from Native Video Context
“And of course I mentioned before that Keffer Hartline, when he discovered the ON and OFF systems using light”— MIT OpenCourseWareWatch clip
“First of all, if you remember, I told you that back in the 19th century, Keffer Hartline”— MIT OpenCourseWareWatch clip
“Now when Keffer Hartline did this by shining light into the eye, he noticed that there are some says which are called ON cells,”— MIT OpenCourseWareWatch clip
“they kind of followed in the spirit of Keffer Hartline.”— MIT OpenCourseWareWatch clip
“And Kuffler did experiments similar in technique, in terms of activating the eye, that had been done by Keffer Hartline, which shine light”— MIT OpenCourseWareWatch clip
“Well, the first person who did this was Keffer Hartline.”— MIT OpenCourseWareWatch clip
「keffer」のスピーキング練習
ネイティブの発音を聞き、マイクに向かってセンテンスを復唱すると、リアルタイムで単語ごとの発音精度スコアが表示されます。
And of course I mentioned before that Keffer Hartline, when he discovered the ON and OFF systems using light
文脈で聴く: “keffer”
8 件のクリップThe 英語 word “keffer” is transcribed in the International Phonetic Alphabet (IPA) as ˈkɛfər (phonetic respelling: KE-fər). Phonologically, it consists of 2 syllables (KE · fər), with primary lexical stress placed on the 1st (initial) syllable (KE). Grammatically, “keffer” functions as a noun. SayItVid indexes 8 authentic 英語 video clips demonstrating how native speakers articulate “keffer” in natural connected speech across American (US: 8 sampled), British (UK), and Australian (AUS) accents, including verified broadcasts from MIT OpenCourseWare.
Spoken Video Transcripts & Contextual Quotes (5 Verified Clips)
- 🇺🇸 USMIT OpenCourseWareClip #1 · @32:24
“Prize for those discoveries of how V1 operates. OK? And of course I mentioned before that Keffer Hartline, when he discovered the ON and OFF systems using light And of course I mentioned before that Keffer Hartline,”
- 🇺🇸 USMIT OpenCourseWareClip #2 · @3:28
“sorry-- of the ON and OFF retinal ganglion cells. First of all, if you remember, I told you that back in the 19th century, Keffer Hartline that back in the 19th century, Keffer Hartline”
- 🇺🇸 USMIT OpenCourseWareClip #3 · @4:08
“the animal or the human we are studying. Now when Keffer Hartline did this by shining light into the eye, he noticed that there are some says which are called ON cells, by shining light into the eye, he”
- 🇺🇸 USMIT OpenCourseWareClip #4 · @22:24
“was in Germany, what they did there, they kind of followed in the spirit of Keffer Hartline. And they shone light into the eye, diffused light.”
- 🇺🇸 USMIT OpenCourseWareClip #5 · @23:19
“who discovered center-surround antagonism. And Kuffler did experiments similar in technique, in terms of activating the eye, that had been done by Keffer Hartline, which shine light in terms of activating the eye, that”
意味と定義: “keffer”
- A state of lethargy, torpor, or lazy daydreaming, often induced by smoking cannabis or opium.
動画内の例文 (3)
- “He spent the entire warm afternoon sitting on the porch in a peaceful keffer.”
- “OK? And of course I mentioned before that Keffer Hartline, when he discovered the ON and OFF systems using light”
- “First of all, if you remember, I told you that back in the 19th century, Keffer Hartline”
よく使われるフレーズ・コロケーション
発音: “keffer”
- Pronunciation:
- KE-fər
- 音節:
- KE · fər
- Written Hyphenation:
- kef · fer
- 第1強勢：
- KE
- IPA:
- ˈkɛfər
- 文脈で聴く
- keffer
押韻・ライミングワード： “keffer”
-ɛfər発音が全く同じ単語（同音異義語）
固有の発音「keffer」 (⁄ˈkɛfər⁄) には一般的な語彙において同音異義語がありません。
「keffer」に関するよくある質問
「keffer」の英語の発音は？
「keffer」の発音記号は ⁄ˈkɛfər⁄ (KE-fər) です。上のネイティブ動画クリップを再生して、実際の会話におけるリアルな発音を聞いてみましょう。
「keffer」の音節（シラブル）数はいくつですか？
「keffer」には 2 つの音節があります：KE · fər。
「keffer」のアクセント（強勢）はどこですか？
「keffer」の第1強勢（主アクセント）は「KE」にあります。動画内の強勢の置かれ方に注目して聴いてみてください。
「keffer」の意味は何ですか？
A state of lethargy, torpor, or lazy daydreaming, often induced by smoking cannabis or opium.
「keffer」が実際に使われている文を聞くには？
このページには、字幕付きの動画例文が 8 件収録されています。「前へ / 次へ」（または矢印キー ← / →）を使って発音される瞬間をピンポイントで再生できます。
What is the most common pronunciation mistake when saying “keffer”?
Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels. Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).