外研版高中英语选修7 Module2 名师语法：主语从句与表语从句精讲精练

名师语法：主语从句与表语从句精讲精练

观察下列从Reading and V ocabulary(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

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。