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TH pronunciation
1) [θ], 'voiceless' or 'soft' sound:
thin
[θin]
thief
[θi:f]
cathedral
[kə'θi:drəl]
author
['ɔ:θə]
month
[mʌŋθ]
both
[bəʊθ]
2) [ð], 'voiced' or 'hard' sound:
this
[ðis]
then
[ðen]
mother
['mʌðə]
father
['fa:ðə]
with
[wið]
smooth
[smu:ð]