1·The inhabitants of the Arctic are known as the Inuit. The singular is Inuk.
北极居民被称作，其单数形式是。
—— 《柯林斯英汉双解大词典》
2·'I am' is the first person singular of the present tense of the verb 'to be'.
I am是动词to be现在时的第一人称单数。
—— 《牛津词典》
3·In 'Tom likes jazz', the singular verb 'likes' agrees with the subject 'Tom'.
在Tom likes jazz一句中，动词单数形式likes与主语Tom一致。
—— 《牛津词典》
4·Its directives are couched in the masculine singular, so it seems to be addressing Israelite males as the legal subjects in the community.
它的指令是用阳性单数来表达的，所以它似乎是把以色列男性作为社会的法律主体。
5·And Kwaio has not just singular and plural, but dual and paucal too.
瓜依沃语中不光有单数和复数，还有双数和若干的概念。