1、1Unit 6 An old man tried to move the mountains单元语法专练状语从句状语从句在复合句中修饰主句中的谓语动词、形容词或副词。状语从句一般由从属连词引导。从句位于句首或句中时通常用逗号与主句隔开,位于句尾时可以不用逗号隔开。状语从句分类如下:类型 引导连词时间状语从句when,before,after,as,while,as soon as,since,not.until.,whenever 等原因状语从句 because,as,since 等条件状语从句 if,unless 等比较状语从句 as/so.as.,than 等结果状语从句 so.that.
2、等目的状语从句 in order that,so that 等让步状语从句 although,even though 等本单元着重介绍了以下三种状语从句。1.unless 引导的条件状语从句。unless 意为“如果不;除非”,相当于 if.not。例如:2Well go to the town unless it rains tomorrow.=Well go to the town if it doesnt rain tomorrow.假如明天不下雨,我们就去城里。注意:unless 和 if 引导条件状语从句时,从句用一般现在时表示将来,而主句则用一般将来时,即遵循“主将从现”原则。2.
3、as soon as 引导的时间状语从句。as soon as 意为“一就”,表示从句和主句的动作先后发生,间隔短暂。例如:The students became quiet as soon as the teacher came in.老师一进来,学生们就安静下来了。注意:在条件状语从句和时间状语从句中,也可遵循“主将从现”原则。例如:Ill call to you as soon as I get there.我一到那里就给你打电话。3.so.that.引导的结果状语从句。so.that.意为“如此以至于”,其中 so 后接形容词或副词,也可用few,little,many,much 等来
4、修饰名词表示程度,that 后的从句表示结果。例如:He was so happy that he forgot the time.他太高兴了,以至于忘了时间。.用方框中所给的连词填空not.until,unless,because,as soon as,so.that1.The tea is so hot that I cant drink it now. 2.The baby girl stopped crying as soon as she saw her mother. 3.My teacher goes to work on time unless he is ill. 4.Sam
5、 did not go back home until it was ten oclock last night. 5.We had to stay at home because it rained hard outside. 3.单项填空(D)1.Anna was sad she didnt want to eat anything. A.too;to B.such;thatC.enough;to D.so;that(B)2.Did you win the game yesterday?Not really. we all tried our best,we lost it. A.If B.ThoughC.Unless D.But(C)3.Its a good habit to wash your hands you have meals. A.unless B.whileC.before D.when(A)4.Last night,the shop was closed she didnt buy any chocolate. A.so B.ifC.or D.when(D)5.Ill go to visit my aunt in England the summer holiday starts. A.while B.sinceC.until D.as soon as
