高一英语状语从句和名词性从句的功能、用法及表达的意义人教版知识精讲.docVIP

高一英语状语从句和名词性从句的功能、用法及表达的意义人教版 【本讲教育信息】 一. 教学内容： 1. 掌握状语从句和名词性从句的功能，用法及表达的意义。 2. 掌握状语从句中的时态搭配。 （一）状语从句的作用。 在将状语从句之前，我们先要弄清楚什么是状语。状语就是在一句话中，表达该句的时间，地点，方式，原因，条件等的成分。 如：I usually get up at ten. He is playing at school happily. He goes to school by bus. I am late, because the traffic is quite heavy. 状语从句，顾名思义是做状语的从句，那么它就相当于一个状语，也就是说，它可以与其他状语（如副词状语，介词状语等）在语法上互换。 如：I usually get up at eight. I usually get up after my mother calls me. He was watching TV at home at eight last night. He was watching TV at home when I arrived. He was doing his homework in the classroom. He was doing his homework where I met him. （二）状语从句的用法。 1. 时间状语从句。时间状语从句做主句的时间状语，表示“当…时，在…时，在…之前/之后，直到…才…，一…就…，等”（连词：when, while, as, before, after, until/till, as soon as, the moment, directly, immediately, instantly等） 如：When I got home, my mum was cooking. He got home while his mum was cooking. Lucy will look after my dog while I am away. As he walked along the street, he sang and danced. Please post the letter for me as you are at the post office. He went away after he locked the door. You can see nothing after the lights go out. He will call me before he leaves. Don’t go across the street until/till the light turns green. He began to do his homework as soon as/immediately/instantly/ directly he got home. He will begin to do his homework as soon as/immediately/instantly/ directly he gets home. 2. 条件状语从句。做一句话的条件状语，如“如果，只要，除非”（连词：if, as/so long as, unless） 如：If you want to go there, I will follow you. You will pass the exam as long as you work hard. You won’t pass the exam unless you study hard. （三）状语从句与主句的时态搭配。状语从句与主句的时态搭配主要有两种：“时态一致”和“主将从现” 1.“时态一致”是指主从句的时态一致，注意是“一致”而不是“一样”，这一点与前面提到的宾语从句的“时态一致”相同，是指主句与从句的时态属于同一时间范畴。属于同一范畴的时态搭配主要有： 一般现在时，现在进行时，一般将来时和现在完成时； 一般过去时，过去进行时，过去将来时和过去完成时。 如：When his mother wakes him up, he is always complaining about everything. As he crossed the road, he saw a small mouse following him. After he closed the window, he began to sing songs. 2.“主将从现”是指当主从句都有将来的意味时，主句