[θ]
(voiceless “th”: no vibration in the vocal chords)
“thanks”
“Thanks for coming!”
“think”
“Just think about it.”
“third”
“I got the third highest score.”
“breath“
“It was a breath of fresh air.”
[ð]
(voiced “th”: the vocal chords vibrate)
“those”
“Those dogs are so cute!”
“breathe”
“I can’t breathe well in this climate.”
“weather”
“The weather is beautiful today!”
“bother”
“Will you ever stop bothering me about that?”