1. 状语从句的基本用法。 2. 引导状语从句的常见连词。 一、状语从句的类型及连词 二、状语从句中的引导词 1. while while引导时间状语从句时,从句的谓语必须是延续性动词(如stay, wait, live等),而不能是非延续性动词。如: Please don’t talk so loud while others are working. while引导让步状语从句时,相当于although / though / as,但while / although引导的让步状语从句不用倒装语序,though引导的让步状语从句可以倒装也可以不倒装,而as引导的让步状语从句则必须倒装。如: While / Although / Though the bride is happy, she will feel homesick at the beginning. Happy as the bride is, she will feel homesick at the beginning. 2. until和till until和till都表示“直到”,常可互换,但till一般不用于句首,也不用于强调句中。 until / till从句与肯定的主句连用时,主句的谓语必须是延续性动词,表示主句的动作一直持续到until / till所表示的时间为止。如: You may stay here until the rain stops. Mr. Bush remained there till his brother arrived. until / till从句与否定的主句连用时,主句的谓语是非延续性动词,表示“直到……才”,即主句的动作到until / till所表示的时间才开始。如: |