他用口哨叫来了狗。
tāyòng kǒushào jiào lái le gǒu 。
He called the dog with a whistle.
在安静的晚上，我听到了远处的口哨声。
zài ānjìng de wǎnshàng ， wǒ tīngdào le yuǎnchù de kǒushàoshēng 。
On a quiet evening, I heard the sound of a whistle in the distance.
她的口腔比较大，所以口哨声很响。
tāde kǒuqiāng bǐjiào dà ， suǒyǐ kǒushàoshēng hěn xiǎng 。
She has a relatively large mouth, so her whistle is very loud.