高考英語二輪語法專講精品教案 第7講 主語從句

高考英語二輪語法專講精品教案  第7講 主語從句 來源：中學(xué)學(xué)科網(wǎng)   1. 定義：用作主語的從句叫做主語從句2. 構(gòu)成：關(guān)聯(lián)詞+簡單句 3．引導(dǎo)主語從句的關(guān)聯(lián)詞有三類： (1)從屬連詞that。如：That they were sisters was unknown to anyone.  她們是姐妹這件事好象沒任何人知道。  (2)從屬連詞whether。如： Whether he’ll come here isn’t clear.他是否會(huì)來這里還不清楚。 (3)連接代詞who, whom, whose, what, which, whoever, whatever, whichever 連接副詞 where, when, how, why。如： What she did is not yet known.她干了什么尚不清楚。 How this happened is not clear to anyone. 這事怎樣發(fā)生的，誰也不清楚。 Whoever comes is welcome.不論誰來都?xì)g迎。 Wherever you are is my home ---- my only home. 你所在的任何地方就是我的家----我唯一的家。 解釋： 1．主語從句能用it作形式上的主語。常以it作形式主語的句型有： A.It+be+形容詞(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that從句。如： It is certain that she will do well in her exam. 毫無疑問她考試成績會(huì)很好。 It is probable that he told her everything. 很可能他把一切都告訴她了。 B.It+be+名詞詞組(no wonder, an honour, a good thing, a pity, no surprise, etc.)+that從句。如：It’s a pity that we can’t go. 很遺憾我們不能去。 It’s no surprise that our team should have won the game. 我們沒贏這場比賽真意外。 C.It+be+過去分詞(said, reported, thought, expected, decided, announced, arranged, etc.)+that從句。如： It is said that Mr. Green has arrived in Beijing. 據(jù)說格林先生已經(jīng)到了北京。 It is reported that China has sent another man-made earth satellite into orbit. 據(jù)報(bào)道中國又成功地發(fā)射了一顆人造地球衛(wèi)星。 D. It+seem, happen等不及物動(dòng)詞及短語+that從句。如： It seems that Alice is not coming to the party at all. Alice似乎不來參加晚會(huì)。 It happened that I was out that day. 碰巧我那天外出了。 E.It+doesn’t matter+連接代詞或連接副詞引起的主語從句。如： It doesn’t matter whether she will come or not. 她是否來這無關(guān)緊要。 F.當(dāng)that引導(dǎo)的主語從句出現(xiàn)在疑問句中時(shí)，要以it作形式主語，而把主語從句后置。如：Is it true that the scientist will give us a lecture next week? 下周那位科學(xué)家將給我們作報(bào)告是真的嗎？ Does it matter much that they will not come tomorrow? 他們明天不來很要緊嗎？  2．注意連接代詞whoever, whatever, whichever等引導(dǎo)主語從句的含義 Whoever comes will be welcome. (whoever=the person who) 來的人將受到歡迎。 Whatever he did was right. (whatever=the thing that)他所做的事情是正確的。

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