表示转折关系的连词,but ,however,yet ,still,while,表示选择关系的并列连词;or表示"或”的意思,,,用语两者之间选择一个祈使句边接or,表示“否则”either....or...或者....或者.....whether....or...不管...还是...表示因果关系的并列是连词for,so
引导时间状语从句的从属连词,before,after,when,while,as,until,since,.....when,while,as,表”当...时.. “ when从句的 谓语动词既可以是瞬间 动词也可以是延续性动词,可用于主句和从句动作同时发生或从句动作先于主句动作发生的情况。while从句的谓语动词只能是延续性动词,侧重主句和从句动作同时发生。as引导一个持续动作,多用于主语和从句动作同时发生,强调”一边...一边...“
untill用法,当主句谓语动词是延续性动词时,主句和从句都用肯定式,译为”直到....为止”,当主句谓语动作时瞬间动词时,主句用否定式,从句用肯定式,not...until,译为“直到...才”She waited until his children came back.She didn't go to bed until his children came back
引导条件状语从语的从属连词,if如果unless除非..引导原因状语从句从属连词,because(不能与so连用), as,sincebecause语气最强,回答why提问的时只能用because,其引导的从句可放在句首句末;as语气不如because强,引导的从句常置于句道。
引导让步状语从句的从属连词;although/though(不能与but连用但是可与yet,still连用,even though/even if....引导目的状语从句的从属连词,so that, in order that/to...引导结果状语从句从的属连词,so that,so /such...that...引导比较状语从句的从属连词,as....as..., not as/so...as ,than....引导名词性从句的从属连词,that, if/whether