主过从过,主将从现,主现从任

1、精品文档重温一道引起思绪混乱的题.Aftera wonderfulmeal, they toldstoriesand sang songs by the campfire.表示 “在 之后 ”的句式： after+ 从句 /doing/n.after I arrived => After my arrival在我到达之后完成同义句转换：when the plane arrived =After his arrival, we have a party. =时态使用重大的规则：（12 字原则 )主过从过，主将从现，主现从任【主将从现】常见的有以下 三种情况：一、 When/if引导的主句是

2、一般将来时，从句用一般现在时。I'll tell her the good newswhen she comes back. 当她回来的时候，我将把这个好消息告诉她。Ifit doesn't rain, he will come here on time.如果不下雨，他会按时来这儿的。二、如果主句是 祈使句，那么从句要用一般现在时。Dont laugh at me when I make a mistake.我犯错误的时候不要笑话我。三、如果主句是 含有情态动词 的一般现在时 ，从句多用一般现在时。1欢迎下载精品文档You should be quiet when you ar

3、e in the reading room.在阅览室时应保持安静。【主过从过】常见的有以下 二种情况：1. 直接引语变成间接引语2. 宾语从句中，当主句的谓语动词为过去时态时， 从句须用表示 过去的某种时态 。例如：He asked when they would go to the party.他问他们什么时候将去参加聚会。Miss Green said she had been to Beijing before.格林小姐说她以前曾经去过北京。【主现从任】常见的有以下 一种情况：在宾语从句 中，当主句的时态为 现在的某种时态 （一般现在时、现在进行时、现在完成时等）后面从句时态不受主句限制

4、，可选用各种适合的时态。例如：Do you know when we'll have a football match?你知道我们什么时候举行足球赛吗？You know he has gone to Shanghai.你知道他已去上海了。【特别关注】1. 当宾语从句表述的是 客观事实、科学真理、现在的习惯动作以及格言 等时，只能用一般现在时 。例如：The teacher told us that light travels faster than sound.老师告诉我们光速比音速要快。2欢迎下载精品文档2. 如果主、从句表示的动作是一前一后发生的，则先前的用过去完成 ，在后的只能用

5、一般过去时态 。When he got there, the train had left.当他到那儿的时候，火车已经开了。【小试身手】1. If he _ harder , he will catch up with us soon.（ 04 北京） A. studyB. studiesC. will studyD. studied 2. I will goswimming with you if I _ free tomorrow.（ 04 哈尔滨） A. will beB. shall beC. amD. was3.If you _ a chance to study in a fore

6、ign country ,just take it .（ 04 苏州） A. getting B. had got C. will get D. get4. Don tleave until he _ back.（）A. have comeB. comesC. will comeD. came5. “Shall we have the volleyball match tomorrow?”“Oh, it will be putoff if it _.（04 黄冈）A. snowsB. is snowingC. snowed D. will snow6. Tell him about the n

7、ews when he _ ,John. Yes, I will.（04 宁波）A.comesB.willcome C.wouldD.is coming7.Tomorrow we will go to the city park_ it is sunny.（ 05 安徽） A.as soon asB. whenC. ifD. as8.Please don tleave until your teacher _back.（05 河南） A. will comeB .came C. comes D. is coming9 .I want to know if there _a sports meeting next month . If they _it , I must get ready for it。（ 05 青岛）A. is,will holdB. will be, holdC. will be, will holdD. will have, hold10.Mary, what about going boating if it _tomorrow.。3欢迎下载精品文档Good idea.A. not rainB. will ra