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。...
2. 如果主句的时态是一般过去时,宾语从句只能 用相应的过去的某种时态(一般过去时,过去进行时,过去将来时,过去完成时)。 Michael said that he would try harder the next semester. Jennifer wondered who had taken her umbrella by mistake. 特殊情况: 1. 从句说明...
第一个:It is a question. 第二个:The discussion is whether the book is worth reading. 这两个句子放在一起比较,我们发现,第一句话很简单,就是一个“主语+系动词+表语”的结构。而第二句话是be动词之后出现了一个句子:whether the book is worth reading,根据这个...
更多内容请点击:托福写作中常用的状语从句