原因状语从句:常由because, as, since和for引导。例如:Nonetheless, I am still in favor of space travel, for it has brought us many benefits. 时间状语从句:常由when和while引导。...
so that既可以引导目的状语从句,也可以引导结果状语从句: 1) 引导目的状语从句时,意为“以便、为了”。例如: Will you please speak a bit louder so that everyone can hear you? 请你讲高一点儿,让大家都能听到好吗? 2) 引导结果状语从句时,意为“结果是,以致”。例...
更多内容请点击：托福写作中常用的状语从句