1、主语从句My brother 弟弟使我高兴我弟弟上学了使我高兴That my brother went to school 含义：充当主语的从句叫做主语从句What he did in the earthquake moved everybody.Why we choose to study here is clear to all of us.Whether she will come or not is still a question.How we can get there in time will be our focus.一、引导主语从句常用的连接词：（1）从属连词：that、if
2、、whether that 在从句中不充当句子成分，也没有实际意义，只起连接作用，但不可省略。That smoking is harmful to health is known to everyone.吸烟有害健康，这是大家都知道的。whether 在从句中不充当句子成分，只起连接作用，意为“是否”。whether 引导的主语从句既可放在句首，也可放在句末。而 if 引导的主语从句不能放在句首，只能放在句末。Whether life exists on other planets is not clear yet.其他星球上是否存在生命还不清楚。It is still doubtful wh
3、ether/if she will play the role.她是否要演这个角色还很难说。（2）连接代词：who，whom，whose，what，which，whoever，whatever，whichever 等连接代词在从句中作主语、宾语、表语或定语，起连接作用并且有实际意义。（3）连接副词：when,where,why,how在从句中作状语分别表示时间、地点、原因和方式，起连接作用并且有实际意义。练习1根据句子含义选择正确的连接词WhoThatWhyWhoeverWhatWhomWhoseWhich1._will hose the meeting hasnt been dcieded.
4、2._car runs faster should be tested.3._comes to our school is welcome.4._side will win is not clear.WhoWhoseWhoeverWhichWhatWhetherWhichWhereWhyThatWhenWhy5._we will leave hasnt been decided.6._he cries is not clear.7._the meeting will be held is not known.8._he didnt come yesterday is unknown.WhenW
5、hyWhereWhy10二、用 it 作形式主语的主语从句当主语从句太长时，为了平衡句子结构，常用it作形式主语，而把主语从句后置。用it作形式主语的常见句型有：（1）It+is+形容词形容词+that 从句从句.It is true/clear/well-known/obvious/(im)possible/right+that.It is clear that the girl told a lie.很清楚那个女孩说谎了。It is possible that Mira might turn up tonight.米拉今晚可能会来。11（2）It+is+名词（词组）名词（词组）+that
6、从句从句.It is a pity/a shame/a wonder/a question/no wonder+that.It is a pity that your parents didnt permit you to go with us.你父母不允许你和我们一起去，真遗憾。Its a wonder that no one got hurt.竟然没有人受伤，真是奇迹。12（3）It+is+过去分词过去分词+that 从句从句.It is said/reported/believed/expected/thought/hoped/suggested+that+从句从句It is repor
7、ted that a violent earthquake happened in Japan.据报道，日本发生了强烈地震。【误区警示误区警示】当过去分词是suggested，ordered，required，advised，requested，insisted等表示建议、要求、命令等的词时，主语从句应使用虚拟语气，即谓语动词用“（should+）动词原形”。It is suggested that the work（should）be done with great care.有人建议，这项工作得特别谨慎地去做。13（4）It+不及物动词（短语）不及物动词（短语）+that 从句从句.常用于
8、该句型的不及物动词（短语）有常用于该句型的不及物动词（短语）有seem（看上去），（看上去），turn out（结（结果是），果是），happen（碰巧），（碰巧），appear（显得）等。（显得）等。It turned out that we were wrong.结果是我们错了。It happened that he was out that day.碰巧他那天不在家。（5）其他句型）其他句型It doesnt matter whether he likes it or not.他喜不喜欢它都没有关系。It makes no difference whether you support m
9、y plan or not.你支不支持我的计划都不重要。14完成句子（1）_（很明显）they badly need help.（2）_（是否没有关系）you come to the party or not tonight.（3）_（很可惜）you cant attend my birthday party.（4）_（建议）the old man should go to the countryside to have a rest.（5）_（在我看来）you disagree on the plan.（6）_（碰巧）the harvest was bad that year.（7）_（结果
10、是）she was a friend of my sister.Its clear/obvious thatIt doesnt matter whetherIts a pity thatIts suggested thatIt seems to me thatIt happened thatIt turned out that课堂小结：课堂小结：主语从句一、引导主语从句常用的连接词（1）从属连词：）从属连词：that、if、whether（2 2）连接代词：连接代词：whowho，whomwhom，whosewhose，whatwhat，whichwhich，whoeverwhoever，wh
11、ateverwhatever，whichever whichever 等等（3 3）连接副词：连接副词：when,where,why,howwhen,where,why,how课堂小结：课堂小结：主语从句二、用it作形式主语，把主语从句放在主句之后五种句型：（1）It+is+形容词形容词+that 从句从句.（2）It+is+名词（词组）名词（词组）+that 从句从句.（3）It+is+过去分词过去分词+that 从句从句.（4）It+不及物动词（短语）不及物动词（短语）+that 从句从句.（5）其他句型）其他句型:It doesnt matter whether.是否是否.没有关系没有关
12、系It makes no difference whether.是否是否.没有区别没有区别2023-4-617It is a well-known fact that/what the faces some people show to the world might be completely different to their real personalities.For instance，most comedians have permanent smiles on their faces and always sound cheerful because thats the natu
13、re of their work.From this，its impossible to know what/where their true feelings are.Although they might be laughing on the outside，they might be crying on the inside.That/How others are feeling is not something that we should make assumptions about，because its not always obvious who is truly happy.What/That is certain is that comedians often use comedy to help them understand themselves and the world.In fact，comedy is a very serious job indeed!Read the passage and choose the correct words.
