[10状语从句讲义.docVIP

状语从句 在复合句中，用于修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可分为时间、原因、条件、让步、目的、结果、比较、地点、方式九类。状语从句可位于主语之前，也可位于主语之后。前置时，从句后用逗号与主句分开；后置时，与主句之间无标点符号。 时间状语从句 时间状语从句是表示时间关系的从句，引导时间状语从句的连词有when/while/as、before/after、till/until、(ever) since等。 1、when, while, as conj.当…时 When I got home, my family were already having dinner. When they were still talking and laughing, the teacher came in. He waved a hello when he saw her. When you think you know nothing, you begin to know something. You are always welcome whenever you come.(when的强势用语) Whenever we met with difficulties, they came to help us. (whenever是when的强势用语) He was about to go to bed when the door bell rang. They were watching the World Cup when suddenly the lights went out. They had just arrived home when it began to rain. Strike while the iron is hot. She fell asleep while she was reading the newspaper. The thief was caught as/when he was stealing in the supermarket. I saw Jim as/when he left the meeting room. He looked behind from time to time as he went. I saw him as he was getting off the bus. 注意：when/while/as除了表示“conj.当…时”之外，还有一些其它的意思，如下： A．有时when表示“conj.虽然，尽管”的含义，相当于although或though，引导让步状语从句慎用！。 He walks when he might take a taxi. 尽管可以打的，但他还是步行。 B.while/whereas有时表示“conj.然而”，表示对比，引导比较状语从句。 while/when/whereas 有时可表示“conj.虽然”，引导让步状语从句慎用！。 I am fond of English while/whereas he likes maths.我喜欢英语而他却喜欢数学。 While they love te children, they are strict with them.虽然他们都爱他们的孩子，但却对他们要求严格。 C．①as表示“conj.随着”。②as表示“conj.既然,由于”，引导原因状语从句。③as表示“conj.虽然,尽管”，引导让步状语从句，从句通常倒装。④as表示“conj.像,按照,如同”，引导方式状语从句。 As time goes on, its getting warmer and warmer.(conj.随着) You will grow wiser as you grow older.(conj.随着) As you are tired, you had better rest.(conj.既然,因为) Rich as he is, he is not happy.(conj.虽然,尽管) Try as he would, he could not lift the rock.(conj.虽然,尽管) Run as I do.(conj.像) Leave it as it is.(conj.像) *with 是“prep.随着”，后面跟名词、代词或动名词。 It always changes with the temperature.它总是随着温度而变化. Good wine will improve with age. 佳酿越陈越醇. Skill comes with experienc