摘要:常見的it開頭的句型有 it is … that … 強調(diào)句型,也有it充當(dāng)形式主語的句型,在這兩種句型中,不少學(xué)員分不清什么是強調(diào)句型,什么時候it充當(dāng)形式主語。小編為大家整理了有關(guān)it開頭的特殊句型,更多資訊請關(guān)注希賽考博英語頻道。
我們先來梳理一下it引導(dǎo)的形式主語句型有哪些:
動詞不定式,動名詞或主語從句作主語時,通常用it作形式主語,放到句首,而真正的主語放在句尾,常見句型有如下:
1. It + be + 形容詞+主語從句,如:
It is uncertain whether he can come to Jenny’s birthday party or not.
2. It + be + 名詞詞組 + 主語從句,這類名詞有:a fact, a pity, a shame, an honor,a question等,如:
It’s a pity that you missed the exciting football match.
It remains a question whether he will come or not.
3. It + be + 過去分詞 + 主語從句,這類過去分詞有:announced, believed, expected, hoped, decided, reported, said, shown等, 如:
It is reported that 16 people were killed in the earthquake.
It is not decided who will give the operation to the patient.
4. It + 不及物動詞(seem, appear, happen等) + 主語從句, 這類不及物動詞有:appear, happen, seem等, 如:
It seemed that he didn’t tell the truth.
It happened that I was out when he called.
5. It + be + 形容詞 + for sb.)+ 動詞不定式
這類句型常用形容詞easy, difficult, hard, important, possible,wise等作表語,有時候為了強調(diào)不定式動作的執(zhí)行者,常在不定式前加for sb,如:
It’s necessary for the young to master two foreign language.
It is unwise to give the children whatever they want.
這類形容詞有:easy, difficult, hard, important, possible,wise
6. It + be + 形容詞 + of sb. + 動詞不定式,這類形容詞常是表示心理品質(zhì),性格特征的形容詞,如:kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和這些形容詞可以構(gòu)成主系表結(jié)構(gòu)。如:
It’s very kind of you to help me with the work.
=You are kind to help me.
It seemed selfish of him not to share his dictionary with others.
=He seemed selfish not to share his dictionary with others.
7. It + be +名詞詞組 + 動詞不定式,如:
It is not a good habit to stay up too late.
8. It + be + 名詞或形容詞 + 動名詞,這類名詞和形容詞常常是:good, no good, no use, a waste of, useless, senseless等,如:
It’s a waste of time talking to her any more.
It is no use arguing about the matter with him.
9. It + take ( sb. )+ 時間(金錢)+ 動詞不定式,如:
It took the workers almost three years to finish building the dam.
It will take a whole day to get to the top of the mountain on foot.
而 it 引導(dǎo)的強調(diào)句型結(jié)構(gòu)為:It is + 被強調(diào)部分 + that …
該句型是強調(diào)句型,將被強調(diào)的部分放在前面,其他部分置于that之后。被強調(diào)部分可以是主語,賓語,表語或狀語。如果把那種句型結(jié)構(gòu)劃掉后,應(yīng)該是一個完整無缺的句子。這也是判斷強調(diào)句型與其他從句的方法。
It was about 600 years ago that the first clock with a face and an hour hand was made.
It was they that cleaned the classroom yesterday.
另外一個it引導(dǎo)的特殊句型為 it is not until + 被強調(diào)部分 + that …
該句型主要用于強調(diào)時間狀語,譯成漢語“直到…才…”,可以理解為 not … until 的強調(diào)形式:
It was not until she took off her glasses that I realized that she was a famous film star.
= Not until she took off her dark glasses did I realize she was a famous film star.
= I didn’t realize she was a famous film star until she took off her glasses.
信息來源網(wǎng)絡(luò),如有侵權(quán),請聯(lián)系客服刪除。
考博英語備考資料免費領(lǐng)取
去領(lǐng)取
2025年考博英語考試
具體時間待通知