zài / yǔ / yán / xué / kè / shàng / lǎo / shī / xiáng / xì / jiǎng / jiě / le / mó / tài / cí / de / yòng / fǎ在语言学课上,老师详细讲解了模态词的用法。In linguistics class, the teacher explained the use of modal words in detail.