外研版选修7Module 2 Highlights of My Senior Year主语从句与表语从句精讲精练学案（含答案）

名师语法：主语从句与表语从句精讲精练 观察下列从Reading and Vocabulary(1) 中选取的句子，体会表语从句和主语从句的用法。 ①It's a good thing that the exams are finished. ②It's well known that Americans are competitive，and I did enjoy it whenever I won our races. ③For an American girl，it's so important that you have a good time at the prom. ④It's a great pity that it's probably the last time this will happen. ⑤But the big surprise of the evening was when I was elected prom queen! [自我总结] ①、②、③、④题都是that引导的_____，⑤题是when引导的_____。 【答案】　主语从句　表语从句 主语从句与表语从句 Ⅰ.主语从句 主语从句即在复合句中充当主语的从句。 1．引导主语从句的连词 引导主语从句的词 例　句 连词：that, whether Whether he will come is not known.不知道他是否会来。 连接代词：what, who, which, whose, whoever, whatever, whichever等 What we need is more practice.我们需要的是更多的练习。Whoever made the mistake should be responsible for it.无论谁犯了这个错误，都应为此负责。 连接副词when, where, how, why等 Why he didn't come wasn't clear.他为什么不来还不清楚。 【提示】　(1)that和whether在主语从句中不作成分；that无实意，但一般不省略；whether作“是否”之意。 (2)连接代词在从句中起名词的作用，作主语、宾语、表语、定语等；连接副词，在从句中起副词的作用，作状语。 2．主语从句能用it作形式上的主语。该类句型有： (1)It＋be＋形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)＋that从句。 It is certain that the film After Shock was a success. 毫无疑问电影《唐山大地震》是一部成功的影片。 【提示】　当形容词为necessary, important, strange, natural等时，从句常用(should)＋动词原形形式。 (2)It＋be＋名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.)＋that从句。 It's no surprise that our team should have won the game.我们赢得这场比赛并不意外。 (3)It＋be＋过去分词(said, reported, thought, expected，decided，announced，arranged, etc.)＋that从句。 It is said that Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。 【提示】　当过去分词为suggested, advised, ordered, requested, insisted, required等表“命令，建议，要求”等意义的词时，that从句中应用“should＋动词原形”，should可省略。 (4)It＋seems/ happens等不及物动词及短语＋that从句。 It seems that Alice is not coming to the party at all. Alice似乎根本不会来参加晚会。 (5)It＋doesn't matter (makes no difference, etc.)＋连接代词或连接副词引起的主语从句。 It makes no difference where we shall have the meeting.我们在哪里开会毫无区别。 3．注意连接代词whoever, whatever, whichever等引导主语从句的含义。 Whoever comes will be welcome.(whoever＝the person who任何人来都将受到欢迎。 Whichever of you comes in will receive a prize.(whichever＝anyone of you who) 你们当中不论哪个进来都将会得到奖励。 Ⅱ.表语从句 表语从句即放在连系动词之后，充当表语的从句。 1．引导表语从句的连词 引导表语从句的词 例　句 连词：that, whether The problem is whether we can find them.问题是我们是否能找到他们。 连接代词：what, who, which, whose等 That's what we should do.那是我们应该做 ... ...