Studies on modal adverbs in modern Chinese Studies on modal adverbs in archaic Chinese 并列题名:Studies on modal adverbs in archaic Chinese Studies on valent grammar in modern Chinese Study of clitics in modern Chinese 并列题名:Studies on valent grammar in modern Chinese Study of trisyllabic words in modern Chinese Research on factivity of verbs in modern Chinese 并列题名:Research on factivity of verbs in modern Chinese Study on sentence-final particles in modern Chinese