In English words: cough, path, both words end with:

Question

BlackTom AI · Accepted Answer

Both "cough" and "path" end in voiceless fricative consonants: /f/ and /θ/ respectively.

1. Relevant knowledge points and concepts
- Consonant manners of articulation: fricatives (air forced through a narrow channel causing turbulence), stops/plosives (complete closure then release), liquids (lateral or rhotic approximants like /l, r/), sonorants (vowels, nasals, liquids, glides — produced with relatively open airflow).
- Phonemic transcription: represent final sounds with IPA: cough /kɒf/ (or /kɔːf/, /kɑf/), path /pæθ/ or /pɑːθ/ depending on dialect.

2. Step-by-step reasoning
- Identify the final phoneme of each word, not just the final letter cluster.
- For cough: orthography ends in -gh, but pronunciation ends in /f/. So final phoneme = /f/.
- For path: orthography ends in -th, pronounced /θ/ (voiceless dental fricative) in most accents. So final phoneme = /θ/.

3. Intermediate articulation details
- /f/: voiceless labiodental fricative — lower lip close to upper teeth; continuous turbulent airflow.
- /θ/: voiceless dental (interdental) fricative — tongue between/against teeth; continuous turbulent airflow.
- Both are voiceless fricatives (manner = fricative, voicing = voiceless).

4. Why the correct answer is correct
- Since both final phonemes are produced by forcing air through a narrow constriction creating friction (/f/ and /θ/), they are fricatives. The defining property (turbulent airflow without complete closure) is satisfied.

5. Why the other options are incorrect
- Stops: require a complete closure and release (e.g., /p, t, k/). Neither /f/ nor /θ/ are stops.
- Liquids: are approximants like /l, r/ with unobstructed airflow; /f/ and /θ/ are not approximants.
- Sonorants: include vowels, nasals, liquids, glides; sonorants are voiced and resonant — again not /f/ or /θ/.

6. Conclusion
Both words end with fricatives; therefore the correct answer is fricatives, which matches the provided answer.

In English words: cough, path, both words end with:单项选择题

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