第一板块 重难语法课(6) 状语从句（课件PPT）-【新高考方案】2024高考英语一轮复习（老教材 新高考 人教版）

重难语法课(6)——状语从句 [语境中体悟用法] 朗读下面短文，体会、领悟加蓝连词的用法及引导的状语从句的类型。 My mother was cooking in the kitchen while① I was doing my school assignments. As soon as②I finished my homework, I went to get some water to drink. Then the doorbell rang. However, my sister unlocked the door before③I could open it. We were surprised the moment④we saw her because⑤ her clothes and face were terribly dirty.She looked much poorer than⑥we expected. Since⑦ we didn't know what had happened to her, we stood there and waited for my sister's story. We wouldn't leave unless⑧ my sister told us all about it.After⑨my sister got changed, she told us that she fell into a ditch when⑩ she walked on a path on her way to my uncle's home in the countryside. She couldn't get out of the ditch.Although⑪she cried for help, no one could hear her. She tried to climb out of it, but, however⑫hard she tried, she failed to escape from it.As⑬time went by, she got worried. After several vain attempts she had to stand where⑭ she was and waited until⑮ a boy student passed by and gave her a hand. The boy reached her a long rope and told her to climb with the rope.She did as⑯the boy told, so⑰ she came out.My sister also warned us to be careful when walking⑱ on a path even_though/if⑲ we are in a great hurry.That's true. We should mind our step so_that⑳ we can ensure our safety. [用法体悟] ①while引导 状语从句，强调主从句动作同时进行，意为“当……时候”。 ②as soon as引导时间状语从句，表示“ ”。 ③before引导 状语从句，表示“还没来得及……就……”。 ④名词词组如the moment/the second/the day/the first time/next time ...等可以用来引导 从句。 ⑤because引导 状语从句。如果后接名词性短语表示原因，则用because of引导。 时间 一……就…… 时间 时间状语 原因 ⑥than引导 状语从句。 ⑦对大家已知的事实提供理由或背景时，常用since引导，意思是“既然”。其引导的 状语从句多在主句之前。 ⑧unless＝if ...not，有“除非，如果不”之意，引导 状语从句。 ⑨after引导 状语从句。 ⑩when表示“当……时”，引导 状语从句。 ⑪引导 状语从句时，可以用although或though，主句可以与副词still连用，但不能再与连词but连用。 比较 原因 条件 时间 时间 让步 ⑫however引导 状语从句时，相当于no matter how。 ⑬引导时间状语从句，表示“ ”时，只能用as。 ⑭引导