顧俊萍
與形容詞相關(guān)的句型是本單元語(yǔ)法重點(diǎn)和難點(diǎn)。現(xiàn)將其相關(guān)句型全面介紹給同學(xué)們。
No.1It's+形容詞+that從句
[要點(diǎn)小結(jié)]在該句型中,讓是形式主語(yǔ),that從句才是真正的主語(yǔ)。that從句通常位于句子的末尾。適用于該句型的形容詞有:wrong,important,necessary,true,funny,clear,lucky,sad等。
[金牌例句]Its strange that they set the thief free last night
很驚訝,他們昨晚竟將那個(gè)小偷放了。
Itstrue that Class Three won the football match last week.
三班上周真的贏了那場(chǎng)足球賽。
No.2It's+形容詞+動(dòng)詞不定式
[要點(diǎn)小結(jié)]在該句型中,it也是形式主語(yǔ),真正的主語(yǔ)應(yīng)是動(dòng)詞不定式。當(dāng)然,動(dòng)詞不定式也可以直接位于句首來(lái)?yè)?dān)任句子的主語(yǔ),但在現(xiàn)代英語(yǔ)中,這種結(jié)構(gòu)用得不多。
[金牌例句]Its important to learn English well now.
如今,學(xué)好英語(yǔ)很重要。
[相關(guān)鏈接]該句型也適用于動(dòng)詞take(花費(fèi))。例如:
It tkesus about twenty minutes to read English every morning.
每天早晨讀英語(yǔ)大約花費(fèi)我們二十分鐘。(動(dòng)詞不定式是該句的真正主語(yǔ),it只是形式主語(yǔ))
No.3It's+形容詞+for sb./sth.+動(dòng)詞不定式
[要點(diǎn)小結(jié)]通常情況下,用作主語(yǔ)的動(dòng)詞不定式結(jié)構(gòu)的邏輯主語(yǔ)通??梢栽谔囟ǖ纳舷挛恼Z(yǔ)境中看出。但在該結(jié)構(gòu)中,動(dòng)詞不定式的邏輯主語(yǔ)就是for后面的人或物。for sb./sth.to do sth.常被稱(chēng)作動(dòng)詞不定式復(fù)合結(jié)構(gòu)。一般說(shuō)來(lái),be后面接表示事物性質(zhì)的形容詞(如easy,difficult,important等)時(shí),常用介詞for;此時(shí),形容詞是針對(duì)不定式的。
[金牌例句]Its necessary for us to keep healthy.
保持健康對(duì)我們是很有必要的。
Its important for you to learn team spirit.
學(xué)習(xí)團(tuán)隊(duì)精神對(duì)你們是非常重要的。
[相關(guān)鏈接]如果be后面接指人的性情或特征的形容詞(如clever,kind,foolish等),并且是針對(duì)動(dòng)詞不定式的邏輯主語(yǔ)的,要用介詞of。例如:
Itsvery kind of you to help me.你幫助我真是太友好了。
[友情提醒]of和for都是介詞,如后接代詞作賓語(yǔ),要用代詞賓格。試體會(huì):
我們?cè)谧闱蛸惽盎虮荣悤r(shí)互相支持互相幫助是很有必要的。
[誤] It's necessary for we to support and help each other both before andduring the football match.
[正] It's necessary for us to support and help each other both before andduring the football match.
1. It's necessary that you train yourself before the match. (同義句)
It's necessary____you____ ____yourself before the match.
2. It's important and helpful____
A. kindB. tokindC. bekindD. tobekind
3. It's not difficult for us____Chinese well.
A. to learnB. learningC. learnedD. learn
4. It's better____on rainy days.
A. stay at homeB. to stay at homeC. staying at homeD. stays at home
5. Is it impossible____him____the problem?
A. of; solveB. for; solveC. of; to solveD. for; to solve
Keys: 1. for ; to train2. D 3. A4. B5. D
責(zé)任編輯/張彩萍mirenr@sina.com