从属连词和并列连词的用法及练习（无答案）

连词 从属连词 从属连词常引导一个从句，依附于主句，从属连词可分为两类:引导主语从句、宾语从句或表语从句等的连词，和引导状语从句各种状态的连词。 POINT 1 引导主语、宾语、表语从句等的从属连词 引导主语从句、宾语从句或表语从句等的连词，主要有that,whether, if等。 例子： Whether he will come or not is still unknown. (whether引导主语从句) 他是否会来还不得而知。 He said that he had a very good journey home. (that引导宾语从句) 他说他回家的旅行很顺利。 Her hope is that she will become a doctor. (that引导表语从句) 她的希望就是将来成为一位医生。 POINT 2 引导状语从句的从属连词 根据其意义和作用，引导状语从句的连词大致可分为: 1.说明时间的连词。常用的有after, before, as, s i nce, untiI , whiIe,when, as soon as等。 例子： I went to bed after I finished my homework. 我做完作业就睡觉了。 Don't say that before you look at the picture. 在你看到图像前先别那样说。 When she reached home, she had a short rest. 当她到家时，她稍微休息了一下。 Go on until you see a bookshop on the right. 一直向前走.直到你看见在右边的一家书店。 2.说明原因或理由的连词。常用的有because等。 例子： Young people like this time of year, because it is good for sports. 年轻人喜欢一年中这个时节，因为对运动有好处。 The children went to the farm, because the farmers needed help. 孩子们去了农场.因为农夫们需要帮助。 3.表示条件，引导条件状态从句的从属连词。常用的有if等。 例子：If you eat unclean food, you m