人教版高一英语必修三专题之 学海探究 学案：Unit4SectionⅡ.doc

课堂探究1as a result of this event，a great dust cloud formed in the sky blocking out the sunlight.正因为这一事件，天空中形成了一团巨大的尘云，挡住了阳光。考点：block out挡住，遮住（光线和声音）；忘掉，抹去（不愉快的事）the volcanic ash blocked out the sun.火山灰挡住了太阳。an ugly building blocked out the view from the window.一座难看的大楼把窗外的景物遮住了。i try to block out the unpleasant experience.我尽力去忘记那段不愉快的经历。考点延伸 阅读下列句子，指出block的词组及含义。various barricades block off all the main streets of the city.各种路障封锁住了城里所有的主要道路。词组：_含义：_the traffic is very heavy and has begun to block up the streets.交通很拥挤，已经开始把街道阻塞了。词组：_含义：_my nose is blocked up with the cold.由于感冒，我的鼻子不通气。词组：_含义：_we found that a big elephant blocked our way.我们发现一头大象挡住了去路。词组：_含义：_即学即用用block out，block up，block ones way，block off填空（1）you cant leave the village.all the streets are _.（2）a piece of rock has fallen and _.we had to stop.（3）over the years she had tried to _ that part of her life.（4）this pipe（管子）is _.there is a piece of wood in it.2grammar：主语从句（1）主语从句的定义：在复合句中起主语作用的句子称为主语从句。（2）主语从句在句中作主语，有以下两种结构：a主语从句位于句首用“”号画出下列句子的主语从句，并译成汉语what he did in the earthquake moved everybody.翻译：_他在地震中做的事感动了每一个人。whose car runs faster should be tested.翻译：_谁的车跑得更快应该被测试一下。who kept the door open all night was unknown.翻译：_谁让门整夜开着，没人知道。b主语从句位于句尾，要用it作形式主语用“”号画出下列句子的主语从句，并译成汉语it is reported that the rain will stop tomorrow.翻译：_据报道，明天雨会停。it is certain that the whole world will win the victory of the antiterrorism.翻译：_全世界一定会取得反恐的胜利。it is a pity that he didnt come to the party.翻译：_可惜的是他没来参加晚会。it happened that i was out that day.翻译：_碰巧那天我不在。is it true that the scientist will give us a lecture next week?翻译：_那位科学家下周要来给我们作报告，这是真的吗？（3）主语从句的连接词可以分为以下三类：athat，whether/if连接词 that 本身没有意义，不作句子成分，只表示从句的开始，位于句首时 that 不能省略；whether/if含有“是否”的意思。语法填空_you dont like him is none of my business._we can control the floods is still uncertain.（我们是否能控制洪水，目前还不肯定。）it doesnt matter_ she will come or not.（她是否会来并不要紧。）b连接代词what，who（m），which，whose，除了引导主语从句之外，还在从句中分别作主语、宾语、表语或定语；连接副词when，where，why，how，除了引导主语从句之外，还在从句中作状语。翻译下列句子，并说明引导词在从句中充当的成分who will do it doesnt matter.翻译：_what we need is more water.翻译：_when we start the work is an important question.翻译：_cwhatever，whoever，whomever，whichever与 what，who（m），which的用法一样，只是具有较强的语意，含有“凡是，不管，无论”等含义。翻译句子whatever he said wasnt true.翻译：_whichever book you choose is yours.翻译：_（4）主语从句应注意的几个问题a主语从句总是使用陈述语序单句改错when will we start hasnt been decided._what do you need are food and water._b主语从句的主谓一致a含有主语从句的句子，主句谓语动词多用单数形式。b含有what引导的主语从句的句子，主句的谓语动词有时与表语保持一致。c有两个引导词引导的主语从句若表示一件事情，主句谓语动词应该用单数形式；若表示两件事情，主句谓语动词应该用复数形式。语法填空why he didnt come to the meeting_（be）a question we should make clear.what he said at the meeting_（be）very important.who will hold the meeting_（have）been decided.what i want_（be）a new bicycle.what my mother bought_（be）some books.when and where he was born_（be）not clear.what caused the accident and who would be responsible for it_（have）not been found out.cit作形式主语和it引导强调句的比较强调句型：it is/was.that.从形式上看，与it作形式主语的句型“it is/was.that”很像，但二者有本质的区别，判断关键：如把句中的it is/was和that去除，句子成分仍然完整，说明该句为强调句型，否则则为主语从句。判断句子类型并译成中文it is a pity that he cant go with us.句子类型：_翻译：_it was in paris that they met for the first time.句子类型：_翻译：_d在“it is said/believed/reported that.”“it happens/occurs that.”“it doesnt matter that.”中that引导的主语从句不可提到句首。判断句子正误（）it is said that the president will visit that country next week.（）that the president will visit that country next week is said.参考答案1block off封锁，封闭block up阻塞，塞住block up封住（孔，洞）block ones way挡住某人的路即学即用：（1）blocked off（2）blocked our way（3）block out（4）blocked up2what he did in the earthquake moved everybody.whose car runs faster should be tested.who kept the door open all night was unknown.it is reported that the rain will stop tomorrowit is certain that the whole world will win the victory of the antiterrorismit is a pity that he didnt come to the partyit happened that i was out that dayis it true that the scientist will give us a lecture next week?thatwhetherwhether谁