第十六章 状语从句文档格式.docx

1、2） While”当时” While I was watching TV, my mum was cooking in the kitchen. While I am listening to the music, my dad is watching TV.3） as （在的同时；一边一边） As he walked along the lake, he sang happily.注意：由when, while, as引导的时间状语从句：When：引导的从句的谓语动词可以是延续性动词，又可以是瞬时动词While 引导的从句的谓语动词必须是延续性的。Eg：While my wife was r

2、eading the newspaper, I was watching TV.（was reading 是延续性）As表示“一边一边”as 引导的动作是延续性的动作。As we was going out, it began to snow.当我们出门时，开始下雪了。2. since自从since引导的从句的谓语动词可以是延续性的动词，又可以是瞬时动词。一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用现在完成时。I have been in Beijing since you left. 自从你离开以来，我一直在北京了。 Where have you been since I las

3、t saw you? 自上次我和你见面以后，你到哪里去了？It be+时间+since的句型中，主句多用一般现在时It is four years since my sister lived in Beijing. 我妹妹不在北京住有四年了。It is five months since our boss was in Beijing.我们老板离开北京有五个月了。3 before，after1） before在之前，引导时间状语从句时，表示主句动作发生在从句动作之前。 Close the door before you leave the room.离开房间前关上门。 He usually d

4、rinks a cup of tea before he goes to school.He had learned a little Chinese before he came to China. 去中国之前，他就学过了一点中文。2）after在之后，引导时间状语从句时，表示主句的动作发生在从句的动作之后。 I went to bed after I finished my homework.做完作业后我就去睡觉了。After he finished middle school, he went to work in a factory.before引导的从句不再用否定式的谓语，并且当be

5、fore引导的从句位于主句之后，有时译成“就，才”。还要注意主句和从句之间的时间关系。当主句用将来时，从句总是用现在时；如果before引导的从句谓语用的是过去时，则主句动词多用过去完成时，这样以便体现动作发生的先后。After表示主句动作发生在从句动作之后。主句和从句的动作的时间关系正好与before引导的从句相反。例如：It will be four days before they come back. 他们要过四天才能回来。Einstein almost knocked me down before he saw me.爱因斯坦几乎把我撞倒才看到我。My father had left

6、 for Canada just before the letter arrived.我父亲恰好在信到之前去加拿大了。They had not been married four months before they were divorced. 他们结婚还不到四个月就离婚了。After you think it over, please let me know what you decide.你仔细考虑过以后，告诉我你是怎样决定的。After we had finished the work, we went home.完成工作之后，我们回家了。（从句用过去完成时，主句用一般过去时） He

7、left the classroom after he had finished his homework the other day.前几天做完作业之后回的家。Mr. Brown had worked in a bank for a year before he came here.布朗先生来这之前已经在一家银行里工作一年了。4） till/until 直到引导时间状语从句。not . until主句谓语动词是非延续性动词until/ till .意为直到才 主句谓语动词是延续性动词 Ill wait here until / till he comes back.我将在这里等着，直到他回来

8、。 You cant go home until / till you finish your work.直到你完成你的工作，你才能回家。5） As soon as 一 就 引导时间状语从句时（主将从现） Eg: As soon as she finishes her homework, she will play tennis. I will call you as soon as I arrive in Beijing. 我一到北京就给你打 电话。 As soon as I finish this work, I will go home. 我一完成 此工作，就回家。考点二 条件状语从句1

9、. 引导条件状语从句连词：1）if 如果（主将从现）If it doesnt rain tomorrow, we will go hiking.如果明天不下雨, 我们就去远足.You will get good grades if you study hard.如果你努力学习,就会取得好成绩.Well start our project if the president agrees.2. unless 除非（=if not）I will go to the party unless he goes there too.（=If he doesnt go there, I will go to

10、 the party.）我会去参加聚会的, 除非他也去.（如果他不去,我就去.）You will be late unless you leave immediately. （=If you dont leave immediately, you will be late.） 如果你不马上走,你将会迟到的。考点三 原因状语从句1because 因为（不能与so连用）I didnt go to school yesterday because I was ill.我昨天没去上学，因为我生病了。My friends dislike me because Im handsome and succes

11、sful.2since既然，由于，因为Since everybody is here, lets begin our meeting.既然大家都来了, 让我们开始开会吧.3as 既然，因为 As you are in poor health, you should not stay up late.既然你身体不好, 你就不该熬夜.4 for 因为I asked her to stay to tea, for I had something to tell her.我请她留下来喝茶,因为我有事要告诉她.because , since , as , for,辨析1）because语势最强，用来说明

12、人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。I didnt go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2）由because引导的从句如果放在句末，且前面有逗号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。He is absent today, because / for he is ill. He must be ill, for he is absent today.

13、3） as和for的区别：通常情况下，as引导的从句在主句前，for引导的从句在主句后。As the weather is cold, I stay at home.=I stay at home, for the weather is cold. 考点四 目的状语从句1 so that 以便于The boss asked the secretary to hurry up with the letters so that he could sign them.The teacher raised his voice on purpose so that the students in the

14、 back could hear more clearly.Ill run slowly so that you can catch up with me.我将慢慢跑以至你能赶上我。I opened the window so that fresh air might come in.我把窗户打开以使新鲜空气可以进来。2 in order that为了We shall let you know the details soon in order that you can/may make your arrangements.不久我们将会让你知道详情,以便你们能够做出安排。注in order to加短语可以与in order that做句型转换考点五 结果状语从句1 so that 如此以致He got up so early that he caught the first bus.The scientists report was so instructive that we were all very excited.科学家的报告很有启发性，我们感到很兴奋。2 such thatIts such