subordinate clause
noun🔊/səˌbɔːdɪnət ˈklɔːz/
🔊/səˌbɔːrdɪnət ˈklɔːz/
(also dependent clause)
(a group of words that is not a sentence but adds information to the main part of a sentence, for example when it rang in She answered the phone when it rang. 从句；从属分句